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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 2.2 g cm−3. The molar mass of the metal is :(NA Avogadro's constant =6.02×1023mol−1)

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Detailed Solution

d=ZMNAa3 Z=4 for fcc M=d×NA×a3Z=2.72×6.023×1023×404×10−1034 M=26.99≈27g mol−1

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