Bond Angles

Problems 

example: MgCl₂

example: BF₃

bond angle <120^o
example: O₃

bond angles <109.5^o
example: NH₃

4 pairs total
2 shared pairs
1 unshared pairs

bond angles 104.5^o
example: H₂O

bond angles <120^o and <90^o
example: SF₄

5 pairs total
3 shared pairs
2 unshared pairs

bond angles 120^o
example: BrF₃

5 pairs total
2 shared pairs
3 unshared pairs

bond angle 180^o
example: XeF₂

bond angles <90^o
example: IF₅

6 pairs total
4 shared pairs
2 unshared pairs

bond angles 90^o
example: XeF₄