Предмет: Химия, автор: byssaya

4. Определите степени окисления для элементов следующих веществ:
K2Cr2O7, H2SiO3, KMnO4, Ca(OH)2

Ответы

Автор ответа: eshkare

1

Степень окисления центральных атомов
K2Cr2O7=+6Cr
H2SiO3=+4Si
KMnO4=+7Mn
Ca(OH)2=+2Ca

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