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Question

What is the difference between Fe2+and Fe3+?


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Solution

Fe2+

Fe3+

IronFe loses its two electrons from the valence shell to form Fe2+and hence showing +2 Oxidation state.IronFe loses its two electrons from the valence shell to formFe3+ and hence showing +3 Oxidation state.
The ion formed is called Ferrous ion.The ion formed is called a Ferric ion.
Usually, they are paramagnetic in nature but all the electrons are paired in low spin complexes which may show diamagnetic behavior.They always show the paramagnetic behavior because of lone pair of electrons
The general electronic configuration: 1s22s22p63s23d6The general electronic configuration: 1s22s22p63s23d5
They are unstable in nature.Due to its half-filled subshell it is more stable, than Fe2+
Ferrous ion is of green color solution and turns to violet color when mixed with water.(FeSO4.7H2O).Ferric ions contain yellow brown solution (FeCl3.6H2O).

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