The coordination number of ${\rm{N}}{{\rm{a}}^ + }\;in\;{\rm{NaCl}}$ is

JEE CHEMISTRY MCQ: SOLID STATE

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The coordination number of

\mathrm{N}{\mathrm{a}^ + }\;in\;\mathrm{NaCl}

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Correct option: A

Option A (6) is correct because in the NaCl crystal structure, each

\mathrm{Na}^+

ion is surrounded by six

\mathrm{Cl}^-

ions, giving it a coordination number of 6.

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