下列元素符号都表示金属的是

初二下册科学第2章小考

Quiz
•
Science
•
8th Grade
•
Medium
1188 KIE
Used 463+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
C、Cu、Ca
S、Fe、P
K、Mg、Ba
H、Na、He
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列元素符号书写不正确的是
镁mg
铜Cu
锌Zn
硅Si
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
以下符号中的数字“2”可以表示离子所带电荷数的是
O2-
O-2
2O
O2
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
依据下列化学符号中数字“2”所表示的意义,
表示一个离子所带电荷的是 ___ ?
Mg2+
CO2
2CO
2NO3-
2Ca
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
依据下列化学符号中数字“2”所表示的意义,
表示分子个数的是 ___ ?
Mg2+
CO2
2CO
2NO3-
2Ca
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
依据下列化学符号中数字“2”所表示的意义,
表示一个分子中所含原子数目的是 ___ ?
Mg2+
CO2
2CO
2NO3-
2Ca
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
依据下列化学符号中数字“2”所表示的意义,
表示原子个数的是 ___ ?
Mg2+
CO2
2CO
2NO3-
2Ca
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