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Electronegativity and Electron Gain Enthalpy

The nitride i...

Question

The nitride ion in lithium nitride is composed of

A

7 protons + 10 electrons

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B

10 protons + 10 electrons

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C

7 protons + 7 electrons

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D

) 10 protons + 7 electrons

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Solution

The correct option is A 7 protons + 10 electrons
Explanation: $N^{3 -}$ (nitride ion) has 7 protons and 7 + 3 = 10 electrons.

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