Which one of the following has the smallest bond angle?

Options

A. `NH_3`
B. `BeF_2`
C. `H_2O`
D. `CH_4`

Answer

C

Explanation

Hybridisation involved in `NH_3` is `sp^3` with one lone pair, in `BeF_2` is `sp^2` with no lone pair, in `H_2O` is `sp^3` with two lone pairs, in `CH_4` is `sp^3` with no lone pair, in `SO_2` is `sp^2` with one lone pair. Therefore, least bond angle is `H_2O` `(~~104-5^(@))`