Question detail
Why do isotopes of the same element have the same chemical properties?
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. They have the same number of neutrons.
- B. They have the same number of protons.
- C. They have different mass numbers.
- D. They have different numbers of electrons.
Answer
The correct answer is B: They have the same number of protons..
Explanation
The correct answer is B: They have the same number of protons.. This supports the learning objective "Describe radioactive isotopes as isotopes with unstable nuclei." 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: They have the same number of neutrons.; They have different mass numbers.; They have different numbers of electrons..
Common mistake
Misunderstanding Radioactive Isotopes
Students often confuse radioactive isotopes with stable isotopes, thinking all isotopes are radioactive.
Remember that radioactive isotopes have unstable nuclei and emit radiation, while stable isotopes do not. Focus on the definition of radioactive isotopes as those with unstable nuclei.
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