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14.10.2022 03:40 •  Химия

Сходны ли свойства соединений обычно со свойствами составляющего элемента?​

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Ответ:
dubay080p0drxr
dubay080p0drxr
24.02.2021 08:41

Дур*

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Must Waste More Time...

0,0(0 оценок)
Ответ:
aboderu
aboderu
17.08.2020 21:00

CIVII20II7

Объяснение:

определим валентность хлора в его соединении с кислородом — Cl2O7.

 

1. Записываем известную валентность кислорода над формулой. Неизвестную валентность обозначаем буквой x:

 

Clx2OII7.

 

2. Находим сумму единиц валентности каждого элемента. Для этого его валентность умножаем на число атомов:

 

x⋅2=2⋅7.

 

3. Вычисляем x:

 

2x=14,x=14:2=7.

 

Валентность хлора равна VII:

 

ClVII2OII7.

Составление формулы бинарного соединения по валентностям химических элементов

Если известны валентности двух элементов, то можно составить формулу их соединения.

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