EASYMCQ SINGLENEET ChemistryPhysical ChemistryAtomic StructureIntro
[KCET 2012] The nitride ion in lithium nitride (Li₃N) is composed of
0.7 protons + 10 electrons
1.10 protons + 10 electrons
2.7 protons + 7 electrons
3.10 protons + 7 electrons
Explanation
Nitride ion = N³⁻. Nitrogen has 7 protons. It gains 3 electrons: 7 + 3 = 10 electrons. So: 7 protons + 10 electrons.
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