2011 2012 Chapter 5 Review

Ionic and Metallic BONDING Chapters 5 (and a little of 4)

Simple Ions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Ex. Mg 2+ Ex. Cl -

Ions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

+ + + + + 2+ 2+ 2+ 2+ 2+ 3+ 3+ 3+ 3+ 3 - 3 - 3 - 2 - 2 - 2 - 2 - - - - - Some Ions w/ Noble Gas Configurations Group 1 Group 2 Group 3 Group 13 Group 15 Group 16 Group 17 Li Be N O F Na Mg Al P S Cl K Ca Sc As Se Br Rb Sr Y Te I Cs Ba La Group 18 Noble Gases Helium He Neon Ne Argon Ar Krypton Kr Xenon Xe

Lewis Symbols ,[object Object],[object Object],[object Object],[object Object],Na  H  Cl    

Valence electrons for Elements ,[object Object],[object Object],1 2 13 14 15 16 17 18

Chemical Bonding ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Chemical Bonding cont… ,[object Object],[object Object],[object Object],[object Object],[object Object]

Chemical Bonding cont… ,[object Object],[object Object],[object Object],Metallic Bonding

Ionic Vs. Metallic Metallic Compounds Ionic Compounds Origin of bonding Free floating valence electrons Electron transfer Forces between particles The metal is held together by the strong forces of attraction between the positive nuclei and the delocalised electrons . ,[object Object],[object Object],Elements present Close on the periodic table (all metals typically) Widely separated on the periodic table (a metal and a nonmetal) metallic elements present always usually Electrical conductivity Good (solid and liquid) Good, when melted (liquid/molten) or dissolved State at room temperature Solid (except Hg) Solid Melting and boiling points High High Other properties Malleable, Ductile Soft to Hard Brittle Hard

Naming Ionic Compounds ,[object Object],[object Object],[object Object],To the Left To the Right

Naming Ionic Compounds ,[object Object],[object Object],[object Object],Cations Anions Ex. Sodium Chloride NaCl Anion (Nonmetal) Cation (Metal)

Naming Ionic Compounds ,[object Object],[object Object],[object Object],Metal symbol Element name Ion symbol Cation name Na sodium Na 1+ sodium ion Al aluminum Al 3+ aluminum ion Ca calcium Ca 2+ calcium ion

Naming Ionic Compounds ,[object Object],[object Object], Metal element symbol Element name Ion symbol Anion name Cl chlor ine Cl 1- chloride ion Br brom ine Br 1- bromide ion O ox ygen O 2- oxide ion

Naming Ionic Compounds ,[object Object],[object Object]

Naming Ionic Compounds Here is the formula unit – this formula states that the 2+ charge of the calcium ion can be cancelled out by 1- charges of the two chloride ions .

Naming Ionic Compounds Here is the formula unit – this formula states that the 3+ charges of the two aluminum ions can be cancelled out by 2- charges of the three oxide ions .

Naming Ionic Compounds ,[object Object],[object Object],[object Object]

Naming Ionic Compounds ,[object Object],[object Object],Metal symbol Element name Ion symbol Cation name (new system) Fe iron Fe 2+ iron (II) ion Fe iron Fe 3+ iron (III) ion Sn tin Sn 2+ tin (II) ion Sn tin Sn 4+ tin (IV) ion Cu copper Cu 1+ copper (I) ion Cu copper Cu 2+ copper (II) ion

Naming Ionic Compounds ,[object Object],[object Object],[object Object],[object Object],[object Object],“ one ” “ many”

Naming Ionic Compounds ,[object Object],[object Object],[object Object],[object Object]

Naming Ionic Compounds What is the predicted formula for the combination of … What about the combination of … Magnesium Ion Mg 2+ Carbonate Ion CO 3 2- Ammonium Ion NH 4 1+ Phosphate Ion PO 4 3-

Quick Review: In an IONIC bond, electrons are lost or gained, resulting in the formation of IONS in ionic compounds. The compound potassium fluoride consists of potassium (K + ) ions and fluoride (F - ) ions. The ionic bond is the coulombic force of attraction between the positive K + ion and the negative F - ion. F K F K + _

2011 2012 Chapter 5 Review

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2011 2012 Chapter 5 Review

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