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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.

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1 Answer

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(a) A and R are correct and R is the correct explanation of A.

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