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The density of a metal which crystallise...

The density of a metal which crystallises in bcc lattice with unit cell edge length 300 pm and molar mass 50 g `mol^(-1)` will be

A

3.1

B

6.2

C

9.3

D

12.4

Text Solution

Verified by Experts

Given,
Molar mass M = 50g/mol
`N_(A)=6.02 xx10^(22)`
Z=2 ( for bcc crystal )
Edge length a = 300 pm = `3xx10^(-8)` cm
`d= (ZxxM)/(N_(A)xxa^(2))=(2xx50)/(6.02xx10^(23)xx(3xx10^(-8))^(2))=6.15~~6.2`
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