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If 'a' is the length of unit cell, then ...

If 'a' is the length of unit cell, then which one is correct relationship ?

A

For simple cubic lattice, radius of metal atom `= (a)/(20`

B

For bcc lattice , radius of metal atom `= ( sqrt(3) a)/( 4)`

C

For fcc lattice, radius of metal atom `= ( a)/( 2 sqrt(2))`

D

All of these

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The correct Answer is:
d
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