Statement-1 : The ground state configuration of `Cr` is `[Ar] 3d^(5) 4s^(1)`
Statement-2 : The energy of atom is lessen in `3d^(5)4s^(1)` configuration compared to `3d^(1)4s(2)` configuration.

Options

A. Statement-1 is true, statement-2 is true and statement-2 is correct explanation of statement-1
B. Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1
C. Statement-1 is true, statement-2 is false
D. Statement-1 is false, statement-2 is true

Answer

A

Explanation

Ground state configuration of `Cr` is `[Ar] 3d^(5) 4s^(1)` due to this extra stability It has high exchange energy.