Question

Select the compound that has bond angles nearest to 120°.

A. CH4

B. H−C≡C−H

C. CHI3

D. O=C=S

E. H2C=O

Answer 1

1)

C is CH4 is sp3 hybridised.

CH4 is tetrahedral

So, bond angle would be 109.5 degree

B)

triple bonded carbon are sp hybridised and they will be linear

So, bond angle = 180 degree

C)

C is CHI3 is sp3 hybridised.

CH4 is tetrahedral

So, bond angle would be 109.5 degree

D)

central C is sp hybridised and they will be linear

So, bond angle = 180 degree

e)

Central C forms 3 sigma bond and hence it is sp2 hybridised

So, it is trigonal planar.

Bond angle would be 120 degree

Answer: E