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NTA Abhyas JEE Main2020ChemistryCoordination CompoundsPractice

The difference in the number of unpaired electrons in Co 2 + ion in its high-spin and low-spin octahedral complexes is -----.

Correct answer

2

Step-by-step solution

Co 2 + ⇒ [ Ar ] 3 d 7 High-spin complex: 3 unpaired electrons Low-spin complex: 1 unpaired electron ∴ Difference = 3 - 1 = 2

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