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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

2.72 g cm -3   . The molar mass of the metal is

a. 20 g mol -1

b. 40g mol -1

c. 30 g mol -1

d. 28 g mol -1 

Ans. d

 

(7)

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