A metal has a fcc lattice. The edge length of unit is 404pm.The density of metal is 2.72 g/cm 3 . The molar mass of the metal is (N A, Avagadro's constant = 6.02 × 1 0 23 )

Question

A metal has a fcc lattice. The edge length of unit is 404pm.The density of metal is 2.72 g/cm 3 . The molar mass of the metal is (N A, Avagadro's constant = 6.02 × 1 0 23 ), 30 g/mol, 27 g/mol, 20 g/mol, 40 g/mol

MARKS App · Accepted Answer

As ρ = z × m N A × ( a ) 3 2.72 = 4 × m 6.02 × 1 0 23 × ( 4.04 × 1 0 - 8 ) 3 On solving m = 27 g / m o l

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