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Sodium metal crystallizes in a body cent...

Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of 4.29 Å. The radius of sodium atom is approximately :

A

`2.86 Å`

B

`6.81 Å`

C

`1.68 Å`

D

`1.86 Å`

Text Solution

Verified by Experts

For BCC structure
`4 pi =sqrt(3a)`
`r= (sqrt(3)xx4.29)/(4) = 1.86 Å`
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VMC MODULES ENGLISH-THE SOLID STATE-LEVEL-1
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