Practice question

MCQ

Question

Which ion achieves a noble gas configuration by gaining three electrons and belongs to Group 15?

Options

Choose one · Correct answer highlighted

N³⁻ Correct P³⁻ O²⁻ F⁻

Explanation

Nitrogen (N) in Group 15 has 1s² 2s² 2p³ . Gaining 3 electrons forms N³⁻ with 1s² 2s² 2p⁶ , matching Ne .

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