Z = 24 CROMO
[Ar] 3d5 4s1
Z = 26 Fe +2
1s2 2s2 2p6 3s2 3p6 3d5 4s1
Z = 29 COBRE
[Ar] 3d10 4s1
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Z = 24 CROMO
[Ar] 3d5 4s1
Z = 26 Fe +2
1s2 2s2 2p6 3s2 3p6 3d5 4s1
Z = 29 COBRE
[Ar] 3d10 4s1
RESPUESTA D