Предмет: Химия, автор: mashaaaaaa3

выберите формулу соединения серы в котором она проявляет валентность 2:

а) SO2 б) SO3 в) MgS г) SF2

Ответы

Автор ответа: бульбазаврикбулька

3

ответ в) MgS
))))))))

Автор ответа: Бакытжан12

4

Так магний двухвалентен поэтому индексы сокращаются
Ответ В)

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