8. Rules: - Winner in every round could earn 15 points - You can refer to elements list while writing symbol - You must state the full name of elements while playing - Those who can state full name of elements in whole one game could earn 5 points - The final winner is those who earn 50 points
9. Cl Sn Na Br Fe Zn K Ag Pb Mg H He Ar Cu Al Be N B P I Ne Si Ca S O
10. Scientist had discover hundreds types of elements in this earth. So can you guess how these elements been arranged in order to let us easier to recognise them?
33. Group 1 Li (2.1) Na (2.8.1) K (2.8.8.1) Rb (2.8.18.8.1) Cs (2.8.18.18.8.1) Fr (2.8.18.32.18.8.1) back All elements in Group 1 has 1 valence electron 1 2 3-12 13 14 15 16 17 18
34. Group 2 back All elements in Group 2 has 2 valence electrons Be (2.2) Mg (2.8.2) Ca (2.8.8.2) Sr (2.8.18.8.2) Ba (2.8.18.18.8.2) 1 2 3-12 13 14 15 16 17 18
35. Group 13 back All elements in Group 1 3 has 3 valence electrons B (2.3) Al (2.8.3) Ga (2.8.18.3) In (2.8.18.8.3) 1 2 3-12 13 14 15 16 17 18
36. Group 17 back All elements in Group 17 has 7 valence electrons F (2.7) Cl (2.8.7) Br (2.8.18.7) I (2.8.18.8.7) 1 2 3-12 13 14 15 16 17 18
37. Group 18 back He (2) Ne (2.8) Ar (2.8.8) Kr (2.8.18.8) All elements in Group 18 has 8 valence electrons Except Helium 1 2 3-12 13 14 15 16 17 18
38. Conclusion: - number of valence electrons = group - 2 valence electrons = Group 2 - 3 valence electrons = Group 13 - 2.8.7 = Group 17
39. Example: -proton number = 6 -number of electron= 6 -electron arrangement=2.4 -LOCATION in periodic table: period 2 (2 electron shells) group 14 (4 electron valence) Refer PT C 12 6
40. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 Mg 2.8.2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
41. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 Mg 2.8.2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
42. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 Mg 2.8.2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
43. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 Mg 2.8.2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
44. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
45. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
46. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
47. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
48. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 Ne 2.8 S 2.8.6 Cl 2.8.7
49. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 Ne 2.8 S 2.8.6 Cl 2.8.7
50. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 Ne 2.8 S 2.8.6 Cl 2.8.7
51. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 Ne 2.8 S 2.8.6 Cl 2.8.7
52. Q1 Fill in the blanks (demo) Refer PT Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 S 2.8.6 Cl 2.8.7
53. Q1 Fill in the blanks (demo) Refer PT Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 S 2.8.6 Cl 2.8.7
54. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 S 2.8.6 Cl 2.8.7
55. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 S 2.8.6 Cl 2.8.7
56. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 Cl 2.8.7
57. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 Cl 2.8.7
58. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 Cl 2.8.7
59. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 Cl 2.8.7
60. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 16 Cl 2.8.7
61. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 16 Cl 2.8.7 3
62. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 16 Cl 2.8.7 3 3
63. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 16 Cl 2.8.7 3 3 7
64. Q1 Fill in the blanks (demo) Elements Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group Be 2.2 2 2 2 2 Mg 2.8.2 3 3 2 2 Al 2.8.3 3 3 3 13 Ne 2.8 2 2 8 18 S 2.8.6 3 3 6 16 Cl 2.8.7 3 3 7 17
66. Q2 Fill in the blanks Ele-ment Proton number Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group H 1 He 2 Ca 20 O 8 P 15 B 5
67. Q2 Check your answers Proton number Electron arrange-ment Number of shells occupied by electrons Period Number of valence electrons Group H 1 1 1 1 1 1 He 2 2 1 1 2 18 Ca 20 2.8.8.2 4 4 2 2 O 8 2.6 2 2 6 16 P 15 2.8.5 3 3 5 15 B 5 2.3 2 2 3 13
68. Q3 Write the location of elements below in periodic table of elements 40 18 Ar 14 7 N 32 16 S
69. Q3 Check out your answer Given in periodic table Period 3 Group 18 40 18 Ar Period 2 Group 15 14 7 N Period 3 Group 16 32 16 S
73. Group 18 back All elements in Group 18 has 8 valence electrons Except Helium He (2) Ne (2.8) Ar (2.8.8) Kr (2.8.18.8) 1 2 3-12 13 14 15 16 17 18
74. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He Neon Argon Krypton Xenon
75. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He Neon Ne Argon Krypton Xenon
76. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He Neon Ne Argon Ar Krypton Xenon
77. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He Neon Ne Argon Ar Krypton Kr Xenon
78. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He Neon Ne Argon Ar Krypton Kr Xenon Xe
79. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne Argon Ar Krypton Kr Xenon Xe
80. Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne 10 Argon Ar Krypton Kr Xenon Xe
81. Boiling Point/K Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne 10 Argon Ar 18 Krypton Kr Xenon Xe
82. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne 10 Argon Ar 18 Krypton Kr 36 Xenon Xe
83. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne 10 Argon Ar 18 Krypton Kr 36 Xenon Xe 54
84. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 Neon Ne 10 Argon Ar 18 Krypton Kr 36 Xenon Xe 54
85. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 Argon Ar 18 Krypton Kr 36 Xenon Xe 54
86. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 0.070 Argon Ar 18 Krypton Kr 36 Xenon Xe 54
87. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 0.070 Argon Ar 18 0.094 Krypton Kr 36 Xenon Xe 54
88. Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 0.070 Argon Ar 18 0.094 Krypton Kr 36 0.109 Xenon Xe 54
89. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 0.070 Argon Ar 18 0.094 Krypton Kr 36 0.109 Xenon Xe 54 0.130
90. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 Neon Ne 10 0.070 Argon Ar 18 0.094 Krypton Kr 36 0.109 Xenon Xe 54 0.130
91. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 Neon Ne 10 0.070 Argon Ar 18 0.094 Krypton Kr 36 0.109 Xenon Xe 54 0.130
92. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 Neon Ne 10 0.070 -246 Argon Ar 18 0.094 Krypton Kr 36 0.109 Xenon Xe 54 0.130
93. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 Neon Ne 10 0.070 -246 Argon Ar 18 0.094 -186 Krypton Kr 36 0.109 Xenon Xe 54 0.130
94. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 Neon Ne 10 0.070 -246 Argon Ar 18 0.094 -186 Krypton Kr 36 0.109 -152 Xenon Xe 54 0.130
95. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 Neon Ne 10 0.070 -246 Argon Ar 18 0.094 -186 Krypton Kr 36 0.109 -152 Xenon Xe 54 0.130 -107
96. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 Argon Ar 18 0.094 -186 Krypton Kr 36 0.109 -152 Xenon Xe 54 0.130 -107
97. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 -248 Argon Ar 18 0.094 -186 Krypton Kr 36 0.109 -152 Xenon Xe 54 0.130 -107
98. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 -248 Argon Ar 18 0.094 -186 -189 Krypton Kr 36 0.109 -152 Xenon Xe 54 0.130 -107
99. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 -248 Argon Ar 18 0.094 -186 -189 Krypton Kr 36 0.109 -152 -156 Xenon Xe 54 0.130 -107
100. Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 -248 Argon Ar 18 0.094 -186 -189 Krypton Kr 36 0.109 -152 -156 Xenon Xe 54 0.130 -107 -112
101. next Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 1st Ionisation Energy/kJ mol -1 Atomic Radius/nM He 2372.3 0.128 Ne 2080.6 0.160 Ar 1520.4 0.174 Kr 1350.7 0.189 Xe 1170.4 0.218 Atomic Number Relative Atomic Mass Boiling Point/K He 2 4.003 4.216 Ne 10 20.180 27.10 Ar 18 39.948 87.29 Kr 36 83.30 120.85 Xe 54 131.29 166.1 Noble gases Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Helium He 2 0.050 -269 -270 Neon Ne 10 0.070 -246 -248 Argon Ar 18 0.094 -186 -189 Krypton Kr 36 0.109 -152 -156 Xenon Xe 54 0.130 -107 -112
128. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Sodium Potassium Rubidium Caecium
129. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li Sodium Potassium Rubidium Caecium
130. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li Sodium Na Potassium Rubidium Caecium
131. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li Sodium Na Potassium K Rubidium Caecium
132. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li Sodium Na Potassium K Rubidium Rb Caecium
133. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li Sodium Na Potassium K Rubidium Rb Caecium Cs
134. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na Potassium K Rubidium Rb Caecium Cs
135. next Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na 11 Potassium K Rubidium Rb Caecium Cs
136. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na 11 Potassium K 19 Rubidium Rb Caecium Cs
137. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na 11 Potassium K 19 Rubidium Rb 37 Caecium Cs
138. next Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na 11 Potassium K 19 Rubidium Rb 37 Caecium Cs 55
139. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 Sodium Na 11 Potassium K 19 Rubidium Rb 37 Caecium Cs 55
140. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 Potassium K 19 Rubidium Rb 37 Caecium Cs 55
141. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 0.19 Potassium K 19 Rubidium Rb 37 Caecium Cs 55
142. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 0.19 Potassium K 19 0.23 Rubidium Rb 37 Caecium Cs 55
143. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 0.19 Potassium K 19 0.23 Rubidium Rb 37 0.25 Caecium Cs 55
144. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 0.19 Potassium K 19 0.23 Rubidium Rb 37 0.25 Caecium Cs 55 0.26
145. next Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 Sodium Na 11 0.19 Potassium K 19 0.23 Rubidium Rb 37 0.25 Caecium Cs 55 0.26
146. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 Potassium K 19 0.23 Rubidium Rb 37 0.25 Caecium Cs 55 0.26
147. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 886 98 Potassium K 19 0.23 Rubidium Rb 37 0.25 Caecium Cs 55 0.26
148. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 886 98 Potassium K 19 0.23 774 64 Rubidium Rb 37 0.25 Caecium Cs 55 0.26
149. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 886 98 Potassium K 19 0.23 774 64 Rubidium Rb 37 0.25 688 39 Caecium Cs 55 0.26
150. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 886 98 Potassium K 19 0.23 774 64 Rubidium Rb 37 0.25 688 39 Caecium Cs 55 0.26 678 28
151. next Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Lithium Li 3 0.15 1347 181 Sodium Na 11 0.19 886 98 Potassium K 19 0.23 774 64 Rubidium Rb 37 0.25 688 39 Caecium Cs 55 0.26 678 28
152.
153.
154.
155. Before we study the chemical properties, draw out the table first! Alkali Metals Reacts with water Reacts with Oxygen gas Reacts with chlorine gas Lithium / Li Sodium / Na Potassium / K
156. 2. Chemical properties - Have similar chemical properties, why? - answer: all have one valence electron A . water B. Oxygen C . Chlorine - All of alkali metals could reacts with: Next to reactivity
194. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F Bromine Chlorine Iodine Astatine
195. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F Bromine Br Chlorine Iodine Astatine
196. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F Bromine Br Chlorine Cl Iodine Astatine
197. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F Bromine Br Chlorine Cl Iodine I Astatine
198. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F Bromine Br Chlorine Cl Iodine I Astatine As
199. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 Bromine Br Chlorine Cl Iodine I Astatine As
200. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 Bromine Br 17 Chlorine Cl Iodine I Astatine As
201. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 Bromine Br 17 Chlorine Cl 35 Iodine I Astatine As
202. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 Bromine Br 17 Chlorine Cl 35 Iodine I 53 Astatine As
203. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 Bromine Br 17 Chlorine Cl 35 Iodine I 53 Astatine As 85
204. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 Bromine Br 17 Chlorine Cl 35 Iodine I 53 Astatine As 85
205. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 Bromine Br 17 0.099 Chlorine Cl 35 Iodine I 53 Astatine As 85
206. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 Bromine Br 17 0.099 Chlorine Cl 35 0.114 Iodine I 53 Astatine As 85
207. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 Bromine Br 17 0.099 Chlorine Cl 35 0.114 Iodine I 53 0.133 Astatine As 85 -
208. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 Bromine Br 17 0.099 Chlorine Cl 35 0.114 Iodine I 53 0.133 Astatine As 85 -
209. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 -188 -220 Bromine Br 17 0.099 Chlorine Cl 35 0.114 Iodine I 53 0.133 Astatine As 85 -
210. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 -188 -220 Bromine Br 17 0.099 -35 -101 Chlorine Cl 35 0.114 Iodine I 53 0.133 Astatine As 85 -
211. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 -188 -220 Bromine Br 17 0.099 -35 -101 Chlorine Cl 35 0.114 59 -7 Iodine I 53 0.133 Astatine As 85 -
212. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 -188 -220 Bromine Br 17 0.099 -35 -101 Chlorine Cl 35 0.114 59 -7 Iodine I 53 0.133 184 114 Astatine As 85 - - -
213. Alkali metals Symbol Proton Number Atomic Radius / nm Boiling Point / °C Melting Point / °C Fluorine F 9 0.071 -188 -220 Bromine Br 17 0.099 -35 -101 Chlorine Cl 35 0.114 59 -7 Iodine I 53 0.133 184 114 Astatine As 85 - - -
218. High Electronegativity - which means the strength of its atom in a molecule to pull electrons towards in nucleus
219. 2. Chemical properties - Have similar chemical properties, why? - Answer:all have seven valence electrons A . water B. alkali C. Iron metal - All of alkali metals could reacts with: Next to reactivity
220.
221. Br 2 + H 2 O HBr + HOBr Bromine water hydrobromic hypobromus acid acid I 2 + H 2 O HI + HOI Iodine water hydroiodic hypoiodus acid acid Chemical properties
222.
223. Br 2 + 2NaOH NaBr + NaOBr + H 2 O Bromine sodium sodium sodium water hydroxide bromide bromate(I) I 2 + 2NaOH NaI + NaOI + H 2 O Iodine sodium sodium sodium water hydroxide iodide iodate(I) Chemical properties
224.
225. 2Br 2 + 3Fe 2FeBr 3 Bromine Iron Iron (III) bromide 2I 2 + 3Fe 2FeI 3 Iodine Iron Iron (III) iodide