MHT CET Chemistry question

Not in JEE Main or NEET syllabus

The unit cell length of sodium chloride crystal is 564 pm. Its density would be

Answer: (B)

Solution

NaCl is fcc with formula units, so \frac{4×58.5}{6.022×10^{23}×(564×10^{-10})^3}$≈2.16

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Question ID VK-042707