
Валентность
Authored by Marina Komarova
Chemistry
7th Grade
Used 36+ times

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11 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Валентность- это...
свойство атомов постоянное и переменное
свойство атомов присоединять кислород
свойство атомов присоединять другие атомы
свойство атомов присоединять определенное количество других атомов
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
постоянная валентность кислорода равна
I
III
II
I или II
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
в формуле CaxOy x и y равны...
[Ca(II) O(II)]
x=1
y=2
x=2
y=2
x=1
y=1
x=2
y=1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
в формуле FexOy x и y равны...
[Fe(III) O(II)]
x=2
y=3
x=2
y=2
x=3
y=2
x=1
y=2
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
в формуле ClxOy x и y равны...
[Cl(VII) O(II)]
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
в формуле CxOy x и y равны...
[C(IV) O(II)}
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Выберите правильно составленную формулу оксида углерода (II)
C2O
CO2
C3O
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