Выберите правильный ответ для формулы состава атома углерода

1)+12 С(12p+, 12nº)12e-
2)+12 С(12p+, 6nº)12e-
3)+6 С(6p+, 6nº)6e-
4)+12 С(6p+, 6nº)6e-
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