1. Which electrons (in which sub-shell) are lost by an iron atom to form an Fe2+ ion?
2. Fe3+ ions or Fe2+ ions are more stable? Why?
Electrons in iron
2008-10-26 8:04 am
回答 (1)
2008-10-26 8:48 am
✔ 最佳答案
1.Fe: 1s2 2s2 2p6 3s2 3p6 3d6 4s2
Two 4s electrons are lost by an Fe atom to form an Fe2+ ion.
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2.
Fe2+ : 1s2 2s2 2p6 3s2 3p6 3d6
Fe3+ : 1s2 2s2 2p6 3s2 3p6 3d5
Fe3+ ion is more stable than Fe2+ ion.
This is because the Fe3+ has half-filled 3d subshell, which exhibits extra stability.
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收錄日期: 2021-04-23 23:06:40
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