What is the electron configuration of iron 2+?

1 Answer
Jul 21, 2017

Answer:

Of #Fe^(2+)#, #Z=26...........#

Explanation:

We follow the #"aufbau principle"#.........

#1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6)# for atomic iron.....26 electrons specified as required.....

And for #"ferrous ion"#..............24 electrons specified as required.....why #"as required?"#

#{1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6)}^(2+)#