What is the electronic configuration of iron in the form 2,8,8....??
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electronic configuration of iron 2,8,8,8 as atomic no of iron is 26
AngelBritto:
then why is its valency 3?
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The atomic number of Iron is 26.
Electrons per shell: 2, 8, 14, 2
It's valency can be +2 or +3
Electrons per shell: 2, 8, 14, 2
It's valency can be +2 or +3
If you have further doubt,
When iron has +2 valency it has actually lost its 4s electrons but when it has a valency of +3 ,it has lost 4s electrons along with one electron from the paired electrons in 3d orbital , thereby leaving unpaired electrons in each of the five 3d orbitals , this is because partially filled d orbitals have extra stability ...
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