A metal has a fcc lattice. The edge length of the unit cell is \( 404 \mathrm{pm} \). The densit... VIDEO
A metal has a fcc lattice. The edge length of the unit cell is \( 404 \mathrm{pm} \). The density of the metal is \( 2.72 \mathrm{~g} \mathrm{~cm}^{-3} \). The molar mass of the metal is :
(a) \( 20 \mathrm{~g} \mathrm{~mol}^{-1} \)
(b) \( 40 \mathrm{~g} \mathrm{~mol}^{-1} \)
(c) \( 30 \mathrm{~g} \mathrm{~mol}^{-1} \)
(d) \( 28 \mathrm{~g} \mathrm{~mol}^{-1} \)
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