Correct Answer - C
Assertion is correct statement but incorrect statement .
Asserrtion :- is true in ccp atom present ar face centre and corner of each unit cell which creates octahedral void at each body centre and all twelve edges of a unit cell as shown
Correct reason is that beside the body centre these is one octahedral void at centre of each of 12 edges which is surrounded by six atoms
out of six atoms four belongs to some unit cell (2 at corner and 2 at face centre ) and 2 atoms belongs to adjacent unit cell .