Question

Give the electronic configuration of a)29Cu2+ b)24Cr3+ c)26Fe2+

Answer 1

a) It's certainly 1s2 2s2 2p6 3s2 3p6 3d9.

b) 1s2 2s2 2p6 3s2 3p6 3d3

c) 1s2 2s2 2p6 3s2 3p6 3d6

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