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CBSE Class 12-science Answered

A metal M crystallizes in FCC and BCC structure depending upon the temperature. What would be the ratio of its density in FCC and BCC structures?

Asked by Pragyashree Jain | 16 May, 2014, 10:05: AM
answered-by-expert Expert Answer
Dear

For the FCC structure Z1=4 and BCC structure, Z2 = 2

Volume is V and Atomic mass is M.

Density of the element,

ρ1 = Z1 X M

V X N0 (1)

And,

ρ2 = Z2 X M

V X N0 (2)

Divide (1) by (2)

We get ,

ρ1 / ρ2 = Z1 / Z2 = 4/2 = 2/1 or 2:1

Hence, the ratio of densities of FCC to BCC is 2:1.


Regards

Topperlearning Team.
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