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Which of the following represents the accurate electronic configuration of nitrogen?

1. 1s² 2s² 2p¹ 2p¹ 2p¹
2. 1s² 2s² 2p² 2p¹ 2p¹
3. 1s² 2s² 2p² 2p² 2p¹
4. 1s² 2s² 2p² 2p² 2p²

Correct answer: 1s² 2s² 2p¹ 2p¹ 2p¹

Solution

Nitrogen (N) has an atomic number of 7, so its electronic configuration is 1s² 2s² 2p³. Option A correctly represents this configuration with three unpaired electrons in the 2p orbitals.

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