Images NA K RB

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Na k rb. 1s22s22p6. 1s2 2s2 2p6 3s1. 1s22s2p1 это. 1s22s22p6 3s2 3p3.
1s22s22p6. 1s2 2s2 2p6 3s1. 1s22s2p1 это. 1s22s22p6 3s2 3p3.

See also