Consider the transition..... | JEE Main 2026 22 Jan Shift 1

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JEE MAIN 2026

22-01-26 S1

Question

Consider the transition metal ions $\mathrm{Mn}^{3+}, \mathrm{Cr}^{3+}, \mathrm{Fe}^{3+}$ and $\mathrm{Co}^{3+}$ and all form low spin octahedral complexes. The correct decreasing order of unpaired electrons in their respective $d$-orbitals of the complexes is

Select the correct option:

A

$\mathrm{Cr}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+}>\mathrm{Mn}^{3+}$

B

$\mathrm{Mn}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+}>\mathrm{Cr}^{3+}$

C

$\mathrm{Fe}^{3+}>\mathrm{Co}^{3+}>\mathrm{Mn}^{3+}>\mathrm{Cr}^{3+}$

D

$\mathrm{Cr}^{3+}>\mathrm{Mn}^{3+}>\mathrm{Fe}^{3+}>\mathrm{Co}^{3+}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

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