05 p block elements Hydrides & Halides of group 15 preparation of Ammonia class 12th chap 07

The basic strength of the hydrides of group 15 elements :

For p -block elements, the normal valence (or group valence is equal to the number of valence electrons only for_______elements (i) group 17 (ii) group 15 (iii) group 14 (iv) group 13

The correct melting point order of hydrides of group is 15 elements is:

Which of the following statements about halides of group 15 elements is incorrect?