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 atom of an element Q has an atomic number of 27 and a mass number of 60. Which of the following statements is true about the subatomic particles of the atom of element Q? |. Atom of element Q has 27 electrons and 60 protons ||. Atom of element Q has 27 protons and 27 electrons |||. Atom of element Q has 27 electrons and 60 neutrons |V. Atom of element Q has 27 protons and 33 neutrons
A. I and IV only
B. II and IV only
C. II and III only
D. I and III only
参考答案: B
本题详细解析:
The atomic number is the number of protons. The mass number is the sum of the number of protons and neutrons. For a neutral atom, the number of electrons is equal to the number of protons.
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