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Nitrogen molecule is diatomic containing a triple bond between two N atoms, N≡N. Therefore, nitrogen molecule is formed by sharing six electrons.

1. Cane sugar is oxidised to oxalic acid.
2. Nitrogen molecule contains triple bond between N atoms having very high dissociation energy (946 kJ mol⁻¹) due to which it is relatively inactive.
3. H₃PO₃ is named as hypophosphorous acid.
4. Aqueous solution of ammonia is obtained by passing NH₃ in H₂O which gives NH₄⁺ and OH⁻ ions.

Correct answer: Nitrogen molecule contains triple bond between N atoms having very high dissociation energy (946 kJ mol⁻¹) due to which it is relatively inactive.

Solution

Option B is correct because nitrogen's triple bond has a very high bond dissociation energy, making it relatively inert. The other options are unrelated to the nitrogen molecule's bonding.

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