An element whose atomic number is same but mass number is different is called:
Correct answer: C. Isotope
- A. Isomer
- B. Isobar
- C. Isotope
- D. Isotones
Explanation
C is the answer as the atomic number is the proton number and the mass number is the nucleon number. Having the same proton number implies the atoms are of the same element so, having different nucleon numbers indicates a difference in the number of neutrons which is the characteristics of isotopes of the same element.
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