Exam-style question
Try this first
What defines an isotope of an element?.
- A.Isotopes have the same number of protons but different numbers of neutrons.
- B.Isotopes have different numbers of protons and neutrons.
- C.Isotopes have the same mass number.
- D.Isotopes are always radioactive.
Answer and explanation
Attempt the question first, then reveal the model answer and explanation.
Common mistake
No common mistake is linked to this question yet.