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A metal crystallises in bcc lattice. Its...

A metal crystallises in bcc lattice. Its unit cell edge length is about 300 pm and its molar mass is about `50 g mol^(-3)` What would be the density of the metal `(g cm^(-3))`

A

3.1

B

6.15

C

9.3

D

12.4

Text Solution

Verified by Experts

The correct Answer is:
B
Density `(rho)= (ZxxM)/(N_Axxa^3)`
For bcc structure, Z=2
`rho = (2xx 50)/(6.023xx10^(23)xx(300xx10^(-10))^3) = 6.15 g//cm^3`.
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