Предмет: Химия, автор: mozarella121006

Ступені окислення Cr2O3, CrO3, CrO

Ответы

Автор ответа: anime1456

1

Ответ:

1)Cr+32O-23

А 2 и 3 незнаю

Автор ответа: lisalyga

1

Ответ:

в Cr2O3 - +3

в CrO3 - +6

в СrO - +2

Объяснение:

Степень окисления кислорода почти всегда равна -2. Поэтому мы -2 умножаем на индекс, который стоит после кислорода и находим наименьшее общее кратное(НОК). Затем НОК делим на индекс, который стоит после хрома и получаем его валентность.

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