Why is the iron KLMN configuration 2,8,14,2 and not 2,8,8,8?
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electronic configuration of Iron
Fe = 26
1s² ,2s²2p^6, 3s²3p^63d^6, 4s²
i.e,. there are 2e- in Kshell,8 in L,14in M,and 2in N
therefore its configuration is 2,8,14,2
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