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Sodium metal crystallises in body centre...

Sodium metal crystallises in body centred cubic lattic with cell edge `4.29 Å` .What is the radius of sodium atom ?

A

`1.857 xx 10^(-8) cm`

B

`2371 xx 10^(-7) cm`

C

`3.817 xx 10^(-8) cm`

D

`9312 xx 10^(-7) cm`

Text Solution

Verified by Experts

The correct Answer is:
a
Radius of `Na` (if hcc lattice)
`= (sqrt(3)a)/(4) = (sqrt(3) xx 4.29)/(4)`
`= 1.8574 Å = 1.874 xx 10(-8)` pm
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