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Fe3+ is an Iron (III) or ferric ion.
When iron loses three electrons it becomes ferric (Fe3+) ion
Iron has 2 oxidation states: Fe2+ and Fe3+ .
An example is the ferric ion: Fe(III) or Fe3+.
FeO2= is a ferric ion where FeO3- is a ferrous ion.
it will lose 3 electrons
If you mean electric charge the ferric ion has a 3+ charge, the ferrous ion has a 2+ charge.
In Ferric ion there are 5 electrons in 'd' orbitals so 'd' is half filled which is stable electronic configuration in Ferrous ion 'd' orbitals have 6 electrons.
Ferrous ion carries a +2 charge and Ferric carries + 3
It is the ferric ion, Fe3+.
These are just the definitions of ferrous and ferric as they apply to iron compounds.
yellow solution forms some sort of ferric flouro thiocyanto complex