ChemistryEasy42×since 2002Q1918A metal crystallises in a face centred cubic structure. If the edge length of its unit cell is ‘a’, the closest approach between two atoms in metallic crystal will be :A22a2\sqrt 2 a22aB2a\sqrt 2 a2aCa2{a \over {\sqrt 2 }}2aD2aCheck answerSkip