alleryElectron configuration of nitrogen (Z = 7):
A2s² 2p⁵
B1s² 2s² 2p⁴ 3p¹
C1s² 2s² 2p³
D1s² 2s² 2p² 3s¹
Answer & Solution
Correct answer: C. 1s² 2s² 2p³
**N has 7 electrons:** 1s² 2s² 2p³.
The 2p³ has 3 unpaired electrons by Hund's rule (each in a separate p-orbital).
Very stable half-filled state, contributing to N's special inertness.
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