Question

The correct order of melting points of group 15 trifluorides is

Answer 1

Boiling points of the elements increases down the group mainly because the mass increases. ... Hence, melting point increases upto Arsenic and decreases down till Bismuth

Answer 2

Answer:

THE CORRECT ORDER FOR THIS IS PF3<ASF3<SbF3<BIF3

Explanation:

BIF3 IS IONIC HALIDE. MELTING POINT INCREASES DOWN THE GROUP