Consider PH₃, PF₃, PCl₃, PBr₃, PI₃, NH₃, AsH₃ and SbH₃.
A chemist accidentally loses the identity of X and remembers:
(1) one lone pair;
(2) bond angle smaller than PF₃;
(3) less basic than PH₃;
(4) not the largest bond angle;
(5) hybridisation less effective than in NH₃;
(6) boiling point lower than NH₃.
The identity of X is:

Question

Consider PH₃, PF₃, PCl₃, PBr₃, PI₃, NH₃, AsH₃ and SbH₃.

A chemist accidentally loses the identity of X and remembers:

(1) one lone pair;

(2) bond angle smaller than PF₃;

(3) less basic than PH₃;

(4) not the largest bond angle;

(5) hybridisation less effective than in NH₃;

(6) boiling point lower than NH₃.

The identity of X is:

TestHub · Accepted Answer

AsH₃ has a smaller bond angle than PF₃, is less basic than PH₃, uses hybridisation less effectively than NH₃, and has a lower boiling point than NH₃. Therefore X = AsH₃ (option B).

Chemistry - Complete P-block Question with Solution | TestHub

Options:

Doubts & Discussion