science
Grade-9
Easy
Question
Which of the following elements are the isotopes?
- H1, H2
- C12, N14
- Ar20 , Ca20
- All the above
Hint:
H1 and H2 are isotopes of hydrogen.
The correct answer is: H1, H2
- Isotopes are the elements of the same species that have the same number of protons and a different number of neutrons.
- The hydrogen atom has 3 isotopes that are protium, deuterium, and tritium.
- All these isotopes have the same number of protons and different numbers of neutrons.
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