Предмет: Химия, автор: xgtjzx99

Одинаковое число электронов на внешнем энергетическом уровне содержат элементы:

1. s-элементы
2. одной группы
3. p -элементы
4. одного периода
(выберите среди этих 4, правильный ответ)

Ответы

Автор ответа: gilinalu

Ответ:

число электронов на внешнем уровне элемента равно номеру группы

Объяснение:

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