Question

a metal crystallizes crystallizes in a face centred cubic structure if the edge length of its unit cell is the closest approach between two atoms in metallic crystal will be???

Answer 1

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For acc. arrangement , 4r = √2a

where, r = radius and a = edge length

•°• Closet distance = 2R = √2A/A =

BY rationalizing ,

= a/√2


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Answer 2

As we learnt in

Relation between radius of constituent particle, r and edge length, a for face centered cubic unit cell -

a/√2
The closest approach b/w two atoms
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