_ are such nuclei of an element that have the same atomic number Z, but have different mass number.
Correct answer: A. Isotopes
- A. Isotopes
- B. Isobars
- C. Isomers
- D. Isotherms
Explanation
Correct option is A. Isotopes of an element has the same number of protons but different numbers of neutrons. Every element has its own number of isotopes.
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