InterviewSolution
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InterviewSolution
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Out of `Fe^(2+)` and `Fe^(3+)` ions, which is more stable ? |
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Answer» `Fe^(3+)` ion is more stable than `Fe^(2+)` ion. This is explained on the basis of the electronic configuration of the two ions `Fe^(3+)` on whit all the five 3d orbitals half filled, is more symmetrical than `Fe^(2+)` on in which four 3d orbitals are half filled and one is filled. Therefore, `Fe^(3+)` on is more stable than `Fe^(2+)` ion. `Fe^(2+):1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6), Fe^(3+) : 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5)` Moreover, `Fe^(3+)` ion has a greater tendency to get hydrated in aqueous solution as compared to `Fe^(2+)` ion. It therefore,expected to be more stable. |
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