An element ‘X’ (At. mass = 40 g mol–1) having f.c.c. structure, has unit cell edge length of 400 pm. Calculate the density of ‘X’ and the number of unit cells in 4 g of ‘X’.
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An element (atomic mass = 100 g/mol) having bcc structure has unit cell edge 400 pm. Then density of the element is
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