1.

A metal (atomic mass = 50) has a body centred cubic crystal structure. The density of the metal is 5.96 g cm^(-3). Find the volume of this unit cell.

Answer»


Solution :`M = 50 G MOL^(-1), d = 5.96 g cm^(-3)`, Z = 2 for bcc unit cell , `d =(ZM)/(N_A xx a^3)`
`a^3=(Z xx M)/(N_A xx d)=(2 xx 50)/(6.023 xx 10^(23) xx 5.96) cm^3 = 2.78 xx 10^(-23) cm^3`


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