Question

why is nitrogen less reactive at room temperature.

Answer 1

Dinitrogen (N2) IS formed by sharing three electron pairs between two nitrogen atoms.The two nitrogen atoms are joined by triple bond(N≡N). The nitrogen atom is very small in size ,therefore the bond length is also quite small(109.8 pm) & as a result the bond dissociation energy is quite high(946Kj / mol).This reason leads N2 to be very less reactive at room temperature.

Hope this helps you

Answer 2

The nitrogen atom is very small in size,therefore the blond length is also quite small.