Question #3bfd4

1 Answer
May 10, 2017

Phosphine is an analogue of ammonia...........

Explanation:

And thus to a first approximation it is trigonal pyramidal.

The experimental HPH=93.5, which is SMALLER than the corresponding angle in ammonia, HNH=105, and hard to rationalize on simple grounds of VESPER. You should buttonhole your prof for his rationale. (And repost his account here!)