Question

Which fo the following statements is not correct?

• A. All the hydrides of $VA$ group elements are pyramidal in shape
• B. The bond angle decreases from $N{H}_3$ to $Bi{H}_3$ down the group because of bond pair-bond pair repulsion
• C. The basic strength decreases from $N{H}_3$ to $Bi{H}_3$, because of decrease in the availability of lone pair of electrons
• D. All are correct

Answer 1

The correct option is A All the hydrides of $VA$ group elements are pyramidal in shape

Hydrides of VA group elements are pyramidal in shape except $H{N}_3$ (hydrazoic acid) which is linear in shape.
The bond angle decreases from $N{H}_3$ to $Bi{H}_3$ down the group
Basic strength decreases from $N{H}_3$ to $Bi{H}_3$due to decrease in the availability of lone pair