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boro 1s2 2s22p1
carbono 1s2 2s2 2p2
nitrogeno 1s2 2s2 2p3
oxigeno 1s2 2s2 2p4
fluor 1s2 2s2 2p5
niquel 1s2 2s2 2p6 3s2 3p6 4s2 3d8 espero q te sirva