Question

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them?

• A. $(n-1)d^{8}n{s}^2$
• B. $(n-1)d^{5}n{s}^1$
• C. $(n-1)d^{3}n{s}^2$
• D. $(n-1)d^{5}n{s}^2$

Answer 1

The correct option is D $(n-1)d^{5}n{s}^2$

As we know half fill orbitals are more stable than partially filled orbitals so option D has half filled orbital that means more energy is required for oxidation comparison to other.