Q59 · CSIR-NET Chemistry, December 2013

Paper: CSIR-NET December 2013 · Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Marks: 2 · Difficulty: Medium

The reason for the chemical inertness of gaseous nitrogen at room temperature is best given
(a)high bonding energy only
(b)electronic configuration
(c)HOMO-LUMO gap only
(d)high bond energy and HOMO-LUMO gap.
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
N₂ is inert because of its very strong triple bond (945 kJ mol⁻¹) and the large HOMO–LUMO gap that makes it neither a good donor nor a good acceptor.

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