Question detail
Which of the following statements is true about isotopes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and isotopes
Question
- A. Isotopes of an element have different chemical properties.
- B. Isotopes of an element have the same number of protons.
- C. Isotopes of an element have different atomic numbers.
- D. Isotopes of an element have different numbers of electrons.
Answer
The correct answer is B: Isotopes of an element have the same number of protons..
Explanation
The correct answer is B: Isotopes of an element have the same number of protons.. This supports the learning objective "Compare the composition of two isotopes of the same element." in Mass number, atomic number and isotopes because it uses the correct atomic and nuclear radiation relationship for Atoms and isotopes. The other options are less suitable because they do not match the required Mass number, atomic number and isotopes idea: Isotopes of an element have different chemical properties.; Isotopes of an element have different atomic numbers.; Isotopes of an element have different numbers of electrons..
Common mistake
Isotope Composition Confusion
Students often confuse the number of protons and neutrons in isotopes, thinking they are the same for all isotopes of an element.
Remember that isotopes of the same element have the same number of protons but different numbers of neutrons, which affects their mass number.
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