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A metal has a fcc lattice. The edge length of the unit cell is 404 pm. The density of the metal is 2.72gcm3 The molar mass of the metal is NA Avogadro's constant =6.02×1023mol1

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a
27gmol−1
b
20gmol−1
c
40gmol−1
d
30gmol−1

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detailed solution

Correct option is A

d=ZMNAa3M=d×NA×a3Z=2.72×6.023×1023×404×10−1034M=27gmol−1

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