Question

electronic configuration of Iron,Cobalt,Nickel?

Answer 1

iron: 1s2 2s2 2p6 3s2 3p6 3d6 4s
             2,8,14,2
cobalt:1s2 2s2 2p6 3s2 3p6 3d7 4s2
             2,8,15,2
nickel:1s2 2s2 2p6 3s2 3p6 3d8 4s
             2,8,16,2
 are the electronic configuration of iron,cobalt and nickel

Answer 2

$\huge\mathfrak\red{Answer :}$

$\huge\textbf{E.C. of Iron :}$

[E.C. = Electronic Configuration]

$1 {s}^{2} \: 2{s}^{2} \: 2 {p}^{6} \: 3{s}^{2} \: 3{p}^{6} \: 4{s}^{2} \: 3{d}^{6}$

= 2, 8, 14, 2

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$\huge\textbf{E.C. of Cobalt :}$

$1{s}^{2}\:2{s}^{2}\:2{p}^{6}\:3{s}^{2}\:3{p}^{6}\:4{s}^{2}\:3{d}^{7}$

= 2, 8, 15, 2

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$\huge\textbf{E.C. of Nickel :}$

$1{s}^{2}\:2{s}^{2}\:2{p}^{6}\:3{s}^{2}\:3{p}^{6}\:4{s}^{2}\:3{d}^{8}$

= 2, 8, 16, 2

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