Question

In nitrogen family, the H-M-H bond angle in the hydrides gradually becomes closer to 90º on going from N to Sb. This shows that gradually

(a) The basic strength of the hydrides increases 

(b) Almost pure p-orbitals are used for M-H bonding 

(c) The bond energies of M-H bonds increase 

(d) The bond pairs of electrons become nearer to the central atom

Answer 1

Correct option: (b) Almost pure p-orbitals are used for M-H bonding

Explanation:

With the decrease in the electronegativity of central atom the bond angle decreases