Question detail
Which statement correctly describes 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 have different atomic numbers.
- B. Isotopes have the same number of electrons.
- C. Isotopes have the same number of neutrons.
- D. Isotopes have different numbers of protons.
Answer
The correct answer is B: Isotopes have the same number of electrons..
Explanation
The correct answer is B: Isotopes have the same number of electrons.. This supports the learning objective "Explain that isotopes of an element have the same number of protons." 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 have different atomic numbers.; Isotopes have the same number of neutrons.; Isotopes have different numbers of protons..
Common mistake
Misunderstanding Isotope Properties
Students often think that isotopes of an element have different numbers of protons.
Remember that isotopes are defined as atoms of the same element that have the same number of protons but different numbers of neutrons.
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