本题目来源于试卷: Models of Matter A.2 The Nuclear Atom，类别为 IB化学
[单选题]
The following table shows the number of subatomic particles present in five species.
Species A Number of protons is 8,Number of neutrons is 8,Number of electrons is 8
Species B Number of protons is 8,Number of neutrons is 8,Number of electrons is 10
Species C Number of protons is 9,Number of neutrons is 10,Number of electrons is 8
Species D Number of protons is 10,Number of neutrons is 10,Number of electrons is 10
Species E Number of protons is 10,Number of neutrons is 12,Number of electrons is 10
Which two species are ions?
A. choice A and B
B. choice B and C
C. choice C and D
D. choice Dand E
参考答案: B
本题详细解析:
Ions do not have the same numbers of protons and electrons. Only species B and C do not have the same number of protons and electrons, so the correct answer is B.
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