Electron Geometry Video Lessons

Concept:

# Problem: Use the VSEPR method to predict the molecular shape of the following species. Show all your reasoning. a. CO32– b. CHCl3 c. IO2F2– d. IF4– e. OCS f. PCl3 g. BrF3

###### FREE Expert Solution

a. CO32

C → least electronegative → central atom → Group 4A → 4 valence electrons

O → Group 6A → 6 valence electrons

AX3 → Trigonal planar

where A is central atom; X is atom; E is electrons

b. CHCl3

C → least electronegative → central atom → Group 4A → 4 valence electrons

H → Group 1A → 1 valence electron

Cl → Group 7A → 7 valence electrons

AX4 → Tetrahedral

c. IO2F2

I → least electronegative → central atom → Group 7A → 7 valence electrons

O → Group 6A → 6 valence electrons

F → Group 7A → 7 valence electrons

AX4 → Tetrahedral

d. IF4

I → least electronegative → central atom → Group 7A → 7 valence electrons

F → Group 7A → 7 valence electrons

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###### Problem Details

Use the VSEPR method to predict the molecular shape of the following species. Show all your reasoning.

a. CO32–

b. CHCl3

c. IO2F2

d. IF4

e. OCS

f. PCl3

g. BrF3