Question

What are isotopes?

Answer 1

Isotopes

• Isotopes are atoms of the same element with different mass numbers but the same atomic number.
• The electronic configuration of isotopes is the same
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Examples of isotopes

• Protium$\left({}_1{}^1\mathrm{H}\right)$, deuterium$\left({}_1{}^2\mathrm{H}\right)$, and tritium$\left({}_1{}^3\mathrm{H}\right)$ are examples of isotopes.
• For protium, deuterium, and tritium, the atomic number is one.
• Protium contains only one proton, deuterium contains one proton and one neutron, and tritium contains one proton and two neutrons.