Предмет: Химия, автор: srosoha801

4. Склади формули речовин за їх валентністю і запиши назви речовин:
а) сполука Цинку з Оксигеном
б) 2 сполуки Феруму з Оксигеном
в) сполука Натрію з Хлором
​

Приложения:

Ответы

Автор ответа: max311501
1

Валентность кислорода равна двум во всех данных соединениях

а) ZnO - оксид цинка (валентность цинка постоянная, равна двум)

б) железо может проявлять вторую и третью валентность в соединениях с кислородом:

FeO - оксид железа (||)

Fe2O3 - оксид железа (|||)

в) NaCl - хлорид натрия (валентность натрия постоянная, равна еденице, валентность хлора в хлоридах также равна единице)

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