Chemistry · Coordination Compounds
Consider the transition metal ions Mn3+, Cr3+, Fe3+, and Co3+, all forming low-spin octahedral complexes. The correct decreasing order of the number of unpaired electrons in their respective d-orbitals in these complexes is:
- 1Cr3+ > Mn3+ > Fe3+ > Co3+✓
- 2Fe3+ > Co3+ > Mn3+ > Cr3+
- 3Mn3+ > Fe3+ > Co3+ > Cr3+
- 4Cr3+ > Fe3+ > Co3+ > Mn3+
Correct answer
Cr3+ > Mn3+ > Fe3+ > Co3+
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