Question

To compare h-a-h bond angles for the second row hydrides h-be-h, h-c-h, h-n-h, h-o-h

Answer 1

Answer:

order of bond angle is h-be-h>h-c-h>h-n-h>h-o-h

Explanation:

In h-be-h

due to linear structure (but it's molecular shape is polymeric because it contain four 3 centered 2 electron bond ) it's bond angle is 180° . In h-c-h all bond are at tetrahedral position at an angle 109°28" . But in h-n-h due to one lone pair bond angel decreases from 109°28" to 208while in h-o-h bond angle reduces to 104°

Answer 2

Answer:

h-be-h, h-c-h, h-n-h, h-o-h