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How Many Valence Electrons Are There In Iron?

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Anonymous Profile
Anonymous answered
EC for Iron is 1s2 2s2 2p6 3s2 3p6 4s2 3d6
The 4s orbital being fully filled is higher in energy than 3d orbital. So it can give 2 electron(valence electron) of 4s orbital and thus has valency of +2. But sometimes it also gives 1 electron of 3d orbital(as half filled orbital are more stable than unevenly filled orbital) thus sometimes its valency is +3.
So Iron has valency of +2 and +3
amber Jhon Profile
amber Jhon answered
Iron is the chemical element and it has 26 atomic number. The electronic configuration of Iron atom includes:

1s22s22p63s23p63d64s2

In the outermost shell or valence shell of iron there are three valence electrons therefore, valency of iron is also 3.


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