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Lithium forms body centred cube structur...

Lithium forms body centred cube structure .The length of the side of its unirt cell is 310 pm Atomic radius of the lithium will be

A

`151.8 "pm"`

B

`75.6 "pm"`

C

`134.50 "pm"`

D

`240.8 "pm"`

Text Solution

Verified by Experts

The correct Answer is:
A
Since lithium crystallises in a body centred cubic crystal,
Atomic radius `(r)=(sqrt(3)a)/4=a/(2sqrt(2))`
`=sqrt(3)/4xx351"pm"=151.8 "pm"`
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