
неорганика 1 тема 15/30
Authored by Aidana Alibekova
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KG
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой из следующих элементов находится в четвертой подгруппе?
Fe
C
Cr
K
Ca
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чем отличаются атомы изотопов одного элемента?
числом протонов
числом нейтронов
числом электронов
зарядом ядра
числом молекула
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чему равна высшая валентность элемента хрома (порядковый номер 24)?
VI
V
IV
III
II
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие элементы имеют постоянную степень окисления +1?
1H
3H
29Cu
47Ag
23V
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чему равна высшая степень окисления марганца 25Mn?
-1
0
+7
+4
+3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Чему равна высшая валентность элемента висмута (порядковый номер 83)?
VIII
VII
IV
VI
V
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какие элементы могут иметь степень окисления -1?
1H
20Ca
12Mg
26Fe
3Li
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