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An element having an atomic radius of 0....

An element having an atomic radius of 0.14 nm crystallises in a fcc unit cell. What is the length of side of the cell ?

A

0.56 nm

B

0.24 nm

C

0.96 nm

D

0.4nm

Text Solution

Verified by Experts

The correct Answer is:
D
For a fcc unit cell
` r = (sqrt2a)/(4)`
`a = (4r)/(sqrt2) = 2sqrt2 xx 0.14 = 0.39 ~~ 0.4 nm`
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DISHA PUBLICATION-THE SOLID STATE-EXERCISE -1 : CONCEPT BUILDER
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