Business Principles, Tools, and Techniques in Participating in Various Types...
Β
IBDP HL bonding
1. Draw the VESPR structures for
14.1.1
Include bond angles, names of
shapes
2. Bonding AHL
β’ Describe sigma and pi bonds
β’ Explain hybridization in terms of sp sp2 sp3
β’ Explain relationship between Lewis
structure, shape and hybridisation
3. Sigma Bonds
β’ Sigma bonds are all single bonds, and result
from axial overlap of orbitals.
9. Homework Task
β’ Using the following molecules create a
student help sheet to explain the bonding, the
shape, the hybridisation, and number of sigma
and pi bonds.
β’ In Carbon Dioxide, Methane and Propene.
10. Geometry and Hybridisation
β’ All you have to do is count the negative
centres, and donβt forget lone pairs
β’ Inorganic :
β’ 4 negative centres is sp3, e.g. NF3 ( 3bp 1nbp in this case )
β’ 3 negative centres is sp2, e.g. BF3 ( 3bp in this case )
β’ 2 negative centres if sp
β’ Organic :
β’ sp3 is Td 109.5, e.g. Alkanes
β’ sp2 is Trig Pl 120, e.g. Alkenes, Carbonyl groups
β’ sp is lin 180, e.g. Alkynes
11. Starter
β’ Explain how sp2 hybridization arises ο
β’ Use electrons in boxes notation to explain
your answer.
12. When electron pairs are not confined
to two adjacent bonding atoms but
extend over 3 or more atoms
13. Benzene Facts ο
β’ Planar regular hexagon
β’ All bond angles 120 degrees
β’ Bond lengths intermediate between single and
double bonds
β’ Reluctant to undergo addition reactions.
