Предмет: Физика, автор: Girl312

Определить валентность:

Р2О5, СuO, SO3 , NH3, MgCl2,Na2S.

Составить формулы:

Mg и O,Ca и N,Na и S.

Ответы

Автор ответа: polya14

0

Найти валентность очень легко, воспользуйтесь таблицей М.; MgO(магний 2-х валентен, и кислород тоже);Ca5N2;NaS(S-бывает 2,4 и 6)

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