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Chemistry-Crystal Field Theory

NEET Chemistry Crystal Field Theory MCQ Question

Type: MCQ-numerical-Medium-Class 12

In an octahedral coordination complex, if the crystal field splitting energy Δo\Delta_o is 20000 cm−1^{-1}, calculate the energy increase for the ege_g orbitals.

A

12000 cm−1^{-1}

B

8000 cm−1^{-1}

C

20000 cm−1^{-1}

D

15000 cm−1^{-1}

Correct Answer

Option A

Detailed Explanation

In an octahedral field, the ege_g orbitals increase in energy by 35Δo\frac{3}{5} \Delta_o. Given Δo=20000 cm−1\Delta_o = 20000 \text{ cm}^{-1}, the increase for ege_g orbitals is 35×20000=12000 cm−1\frac{3}{5} \times 20000 = 12000 \text{ cm}^{-1} .

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