Chemistry, asked by SathvikNR, 1 year ago

Explain variable valency with respect to iron

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Answered by amansharma123
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Valency Of Iron
How to calculate the valency of iron?

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GSENVIRO eNotes educator| CERTIFIED EDUCATOR

The valency of an element is the number of electrons it gains or loses or shares to attain the noble gas configuration. In other words, how any electrons should an element lose or gain or share to have a completely filled outer electronic shell.

Iron (Fe) has an atomic number of 26, i.e. has 26 electrons.

Its electronic configuration is given as: `1s^2 2s^2 2p^6 3s^2 3p^6 3d^6 4s^2`
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