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An element (atomic mass = 100 g//mol) ha...

An element (atomic mass `= 100 g//mol`) having bcc structure has unit cell edge 400 pm .Then density of the element is

A

2.144 `g//cm^3`

B

5.2 `g//cm^3`

C

7.289 `g//cm^3`

D

10.376 `g//cm^3`

Text Solution

Verified by Experts

The correct Answer is:
B
Density = `(Z xx M)/(N_A xx a^3)=(2xx100)/(6.023xx10^(23)xx(400xx10^(-10))^3)`
`=5.2 g//cm^3`
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