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Question

Which among the following is stable?
Fe2+,Fe3+

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Solution

1. Fe3+ is more stable.

2.The d sub-shell has five orbitals, which can accomodate a total of 10 electrons. has half filled orbitals which provide extra stability to it because of symmetrical configuration.

3.Now Fe3+ has d5 configuration which suggests that it has a half filled d orbital which gives extra stability than Fe2+.


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