Предмет: Химия, автор: olyaaa5555

Определите валентности элементов по формуле:
ZnH2, CrO3, SO2, CaCL2

Ответы

Автор ответа: ergashevbobur22

2

Ответ:

Zn-2 валентный Cr-3 валеньный S-4 валентный Са-2 валеньный

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