Предмет: Химия, автор: Аноним

Определить валентность элементов в соединениях : SO; SO2; SO3; P2O5; CaO; F2O3

Приложения:

Ответы

Автор ответа: GoodDrakon

0

у S +2 у O -2
у S +4 у О -2
у S +6
у Р +5 у О -2
Са + 2
F +3
А у кислорода всегда -2

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