An element crystallises in fee structure. If the atomic mass of the element is 72.7 U, the mass of one unit cell of it will be :
(a) 2.9 × 10-24 g
(b) 4.83 × 10-25 kg
(c) 1.2 × 10-22g
(d) 2.41 × 10-24kg
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Option : (b) 4.83 × 10-25 kg