Objective question in Solid state

3 metals A (270), B (80) & C (10) crystallize in simple cubic, face centered cubic and body centered cubic (bcc) phases respectively with unit cell 3, 2 and 1 Ã
respectively. The densities of A:B:C are in the ratio of:
a) 3:2:1 b) 54:68:74 c) 1:1:1 d) 1:2:4

1 Answers

student ·

I have a doubt in this question,

according to my calculation,

we know
d = Z.M. / (a3 * Na)
then, da:db:dc
=(1*270/33):(4*80/23):(2*10/13)[since Na gets cancelled]

but this was not there in the options.
where am i going wrong?

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