Question

Electron configuration of cobalt 2+?​

Answer 1

$\huge{\mathcal{\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

The s,p,d,f configuration for cobalt (Co) is 1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^7, determined by the position of the element on the periodic table. 

The electron configuration for Cobalt at ground state would simply be Co: [Ar] 4s^2,3d^7.

The electron configuration of Cobalt will end in d block as Cobalt is an inner transition metal.

Cobalt is in the 7th column of the d block and therefore has 7 d electrons d7.

Answer 2

Electron configuration of cobalt 2+ is

[Ar] 3d^7

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