Assertion (A) : Cr with electronic configuration [Ar] 3d5 4s1 is more stable than [Ar] 3d4 4s1 .
Reason(R ): Half filled orbitals have been found to have extra stability than partially filled orbitals.
(a) A and R are correct and R is the correct explanation of A
(b) A and R are correct but R is not the correct the explanation of A
(c) A is correct but R is wrong
(d) A is wrong but R is correct.