Question

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QUESTION:-

Why iron has the capability of giving three electrons (Fe^3+) or giving two electrons (Fe^2+)?

Explain with proper reasons .....

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Answer 1

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Iron has 26 electrons in total. So, it has 2 valence electrons.

It readilly looses these two electrons to form Fe^2+.

And Fe^3+ in the case of ferric.

This is because, in the outermost shell, there are only 2 electrons. If it had more than 4 (not 4) , then it would have had a tendency to gain electrons and accquire a negative charge.

Always remember, that if no. of valence electrons is 4 or less than 4, then that atom will loose those electrons and if it is more than 4, then it will gain electrons.

On loosing, charge becomes positive.

On gaining, charge becomes negative.

And, an atom only gains or looses electrons from it's outermost shell.

Hence, iron has the capability of giving three electrons (Fe^3+) or giving two electrons (Fe^2+)

(Fe^3+) - Ferric

(Fe^2+) - Ferrous

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Answer 2

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The chemistry of iron is dominated by the +2 and +3 oxidation states i.e. iron(II) and iron(III) complexes e.g. Fe2+ and Fe3+ complex ions with selected ligands, usually of an octahedral shape, a few tetrahedral iron(III) complexes are mentioned too. The reactions of the aqueous ions iron(II) and iron(III) with ammonia, sodium hydroxide and sodium carbonate are described and explained as are complexes of iron(III) with the chloride ion and cyanide ion.

The chemistry of iron is dominated by the +2 and +3 oxidation states i.e. iron(II) and iron(III) complexes e.g. Fe2+ and Fe3+ complex ions with selected ligands, usually of an octahedral shape, a few tetrahedral iron(III) complexes are mentioned too. The reactions of the aqueous ions iron(II) and iron(III) with ammonia, sodium hydroxide and sodium carbonate are described and explained as are complexes of iron(III) with the chloride ion and cyanide ion.principal oxidation states of iron, redox reactions of iron, ligand substitution displacement reactions of iron, balanced equations of iron chemistry, formula of iron complex ions, shapes colours of iron complexes, formula of compounds

The chemistry of iron is dominated by the +2 and +3 oxidation states i.e. iron(II) and iron(III) complexes e.g. Fe2+ and Fe3+ complex ions with selected ligands, usually of an octahedral shape, a few tetrahedral iron(III) complexes are mentioned too. The reactions of the aqueous ions iron(II) and iron(III) with ammonia, sodium hydroxide and sodium carbonate are described and explained as are complexes of iron(III) with the chloride ion and cyanide ion.principal oxidation states of iron, redox reactions of iron, ligand substitution displacement reactions of iron, balanced equations of iron chemistry, formula of iron complex ions, shapes colours of iron complexes, formula of compoundsWhat are the principal oxidation states of iron?, redox reactions of iron ions, explaining the ligand substitution displacement reactions of iron(II) and iron(III) complex ions, balanced equations of iron chemistry, formula of iron ion complex ions with water, cyanide ion and chloride ion, shapes and colours of iron complex ions, formula of iron(II) and iron(III) compound complexes

hope this helps you