Question

why ammonia has highest dipole moment than other hydrides of group 15

Answer 1

well if we see the structure of ammonia we can understand that the resultant direction will add up in one direction.even

it's trigonal bi pyramidal structure helps to attain the highest dipole movement.

Answer 2

Answer:

Explanation(DIPOLE MOVEMENT : CHARGEx distance.) @ As dominant factor is charge... So Dipole movm- decreases down the group..