Question

Among the hydrides of group 15 elements, the strongest reducing agent is ______.

Answer 1

Among the hydrides of group 15 elements, the strongest reducing agent is BiH₃.

Explanation:

In group 15, reducing character increases down the group due to decreasing bond strength of the E-H bond (E = N, P, As, Sb, Bi). Since the Bi-H bond is the weakest, BiH₃ is the strongest reducing agent among group 15 hydrides.