Question

What are the approximate bond angles in the following? a) SO2 109 180 90 120

b) CO2 120 180 90 109

c) H2O 180 109 90 120

Select each molecule in which the bond angle is not approximate or select none if all are approximate. SO2, H2O, CO2, none

Answer 1

1)

a) SO2

SO2 has lone pair on S beside that is forms 2 sigma bond

So, in total there are 3 electronic domain

Hence it is SP2 hybridised and bond angle will be approximately

120 degree

b) CO2

CO2 is linear

O=C=O

Bond angle will be 180 degree

c) H2O

H2O has two lone pairs on O beside that is forms 2 sigma bond

So, in total there are 4 electronic domain

Hence it is SP3 hybridised and bond angle will be approximately

109 degree

2)

In CO2 bond angle is not approximate