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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

`2.145Å`

B

`1.86Å`

C

`1.315Å`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Cube diagonal
`4r=sqrt3a`
`r=sqrt3/4a=sqrt3/4times4.29Å=1.8576Å`
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