How many effective \[N{{a}^{+}}\] and \[C{{l}^{-}}\] ions are present – McqOptions

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1.	How many effective \[N{{a}^{+}}\] and \[C{{l}^{-}}\] ions are present respectively in a unit cell of \[NaCl\] solid (Rock salt structure) if all ions along line connecting opposite face centres are absent?
A.	3, 3
B.	\[\frac{7}{2},4\]
C.	\[\frac{7}{2},\frac{7}{2}\]
D.	\[4,\frac{7}{2}\]
Answer» B. \[\frac{7}{2},4\]

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