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 is10
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
A. choice Aand B
B. choice B and C
C. choice C and D
D. choice D and E
参考答案: D
本题详细解析:
Isotopes have the same number of protons but different numbers of neutrons.
Species A and B have the same number of protons but also the same number of neutrons so cannot be isotopes.
Species C is the only species in the table with 9 protons so cannot have an isotope with another species in the table.
This leaves species D and E which both have the same number of protons but a different number of neutrons. Therefore, the correct answer is D
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