Which pair are isotopes of each other?
Answer and explanation
Correct answer: A. C and C
Isotopes have the same atomic number and different mass numbers.
**Answer: C and C.**
Why not the others: C and N: they have different atomic numbers. O and O: they are the same nuclide, one an ion. H and He: they have different atomic numbers.
**Answer: C and C.**
Why not the others: C and N: they have different atomic numbers. O and O: they are the same nuclide, one an ion. H and He: they have different atomic numbers.
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