Respuesta:
1. Co: 1s2 2s2 2p6 3s2 3p6 3d7 4s2
2. N³⁻: 1s2 2s2 2p6
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Respuesta:
1. Co: 1s2 2s2 2p6 3s2 3p6 3d7 4s2
2. N³⁻: 1s2 2s2 2p6