How many unit cells are present in 5.0 gm of crystal AB (formula mass – McqOptions

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1.	How many unit cells are present in 5.0 gm of crystal AB (formula mass of AB = 40) having rock salt type structure? (\[{{N}_{A}}\]= Avogadro's no.)
A.	\[{{N}_{A}}\]
B.	\[\frac{{{N}_{A}}}{10}\]
C.	\[4{{N}_{A}}\]
D.	none of these
Answer» E.

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