
Фосфор
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Easy
Irina Feshchenko
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Фосфорная кислота имеет формулу
H3PO4
PH3
H3PO2
H3PO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите степень окисления фосфора в молекуле фосфина (РH3)
-3
+3
0
+5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите степень окисления фосфора в молекуле фосфорной кислоты H3PO4
+5
+3
-3
+1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите относительную атомную массу фосфора
31
15
30
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите количество электронов в атоме фосфора
15
5
31
3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите число электронов на внешнем уровне в атоме фосфора
5
3
4
7
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
В молекуле фосфина РН3 химическая связь
ковалентная полярная
ковалентная неполярная
ионная
металлическая
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