Ответ:
N - 7p,7n,7e
C- 6p,6n,6e
Na- 11p,12n,11e
P-15p,16n,15e
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Ответ:
N - 7p,7n,7e
C- 6p,6n,6e
Na- 11p,12n,11e
P-15p,16n,15e