Предмет: Химия, автор: romangerasimov2

Химия 8 класс.

а) Составьте формулы по валентности СuO.
б) Найдите валентность элемента по формуле CuO и B2O3.

ДАЮ 22 БАЛЛА!!!

Ответы

Автор ответа: Сугубо

2

Cu(II)O(II)

Cu2(I)O(II)

Cu(II)O(II)

B2(III)O3(II)

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