Lewis dot diagram of the nitride ion (N³⁻)

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Lewis dot diagram of the nitride ion: N with a pair of dots on each of its four sides, in square brackets with a 3− charge — The Lewis dot diagram of the nitride ion, N³⁻. A nitrogen atom has 5 valence electrons and gains 3 to fill its octet, so the symbol has a pair of dots on each of its four sides, 8 electrons in all. It is drawn in square brackets with its 3− charge.

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Answer key

N³⁻: 8 valence electrons
4 pairs
Gained 3 electrons; in brackets with its 3− charge

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