The correct statement with respect to dinitrogen is:

Question

Canvas Classes · Accepted Answer

Analysis:

(1) FALSE —  is diamagnetic (all electrons are paired in the triple bond). ✗

(2) FALSE —  does NOT combine with  at 25°C. The reaction  requires very high temperatures (2000°C) or lightning. ✗

(3) FALSE — Liquid nitrogen IS used in cryosurgery (to freeze and destroy abnormal tissue). ✗

(4) TRUE —  is chemically inert at room temperature due to the very strong N≡N triple bond (945 kJ/mol). It is used as an inert atmosphere/diluent for reactive chemicals. ✓

Answer: Option (4)

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