Why is Na3N the formula for sodium nitride?
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Sodium nitride (Na3N) is the inorganiccompound with the formula Na3N. In contrast to lithium nitride and some other nitrides, sodium nitride is an extremely unstable alkali metal nitride.
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When it forms the nitride ion, it gains three electrons to form a 3- ion: N3− . In ionic compounds, the charges of constituent ions must balance. This can be achieved by having threesodium ions per nitride ion. Therefore, the formula of sodium nitride is Na3N
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