Match the following:
 

	Column-I (VA group element)		Column-II (Property)
A)	As	I)	Highest BPt
B)	Sb	II)	Highest mPt
C)	Bi	III)	Highest E.N
D)	N2	IV)	Highest density

	A	B	C	D
1	IV	III	II	I
2	I	II	III	IV
3	II	I	IV	III
4	II	I	III	IV

 

Melting point from nitrogen to arsenic increases & from arsenic it decreases upto bismuth because down the group as the size of the element increases the tendency of elements to form three covalent bonds increases (inert pair effect).

The combination of larger atomic size, stronger intermolecular forces, greater atomic mass, and the half-filled d-orbital all contribute to the higher boiling point of antimony.

The combination of larger atomic size, metallic bonding, greater atomic mass, lone pair of electrons, and relativistic effects all contribute to the higher density of bismuth.

Small atomic size, high effective nuclear charge, almost fully filled valence shell, and strong triple bond all contribute to the high electronegativity of N₂.