Предмет: Химия, автор: bekturganova2019

сколько групп в периодической системе

Ответы

Автор ответа: svetlanavaslarionova

Ответ:

8 групп...............

Автор ответа: bledmollyss

групп 8. Группы A начинаются элементами малых периодов, включают также и элементы больших периодов; содержат и металлы, и неметаллы.

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