A metal crystallises in a face centred cubic structure. If the edge length of the unit cell is 'a' the closest approach betweenthe twoatoms in the metallic crystal will be

A metal crystallises in a face centred cubic structure. If the edge le

1.	A metal crystallises in a face centred cubic structure. If the edge length of the unit cell is 'a' the closest approach betweenthe twoatoms in the metallic crystal will be
Answer» `sqrt2a` `a/sqrt2` 2a `2SQRT2 a ` Solution :For the FCC structure, nearture, nearest neighbour DISTANCE ` (d) = a/sqrt2`