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Chromium crystallises in bcc structure .If its edge length is 300 p m , find its density .Atomic mass of chromium is 52u .`[N_A=6.022 xx 10^(23) cm ,M = 52 _u ` |
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Answer» `a= 300 pm = 300 xx 10^(-10) cm ,M = 53 _u` For bcc Z= 2 `d=(ZM)/(a^3Na)=(2xx52)/((300xx10^(-10))^3xx6.023 xx 10^(23)) =(104)/(2.7 xx 6.022 )=6.396 g//cm^(3)` |
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