What is tritium?

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Multiple Choice

What is tritium?

Explanation:
Isotopes are versions of the same element that differ in the number of neutrons in the nucleus. For hydrogen, the proton count is always one, so the isotopes differ by neutrons: protium has no neutrons, deuterium has one, and tritium has two. Tritium is hydrogen-3, made up of one proton and two neutrons, which means it is a hydrogen isotope containing two neutrons. The other descriptions either refer to a nucleus with protons that would make it helium or to hydrogen with only one neutron (deuterium), not two.

Isotopes are versions of the same element that differ in the number of neutrons in the nucleus. For hydrogen, the proton count is always one, so the isotopes differ by neutrons: protium has no neutrons, deuterium has one, and tritium has two. Tritium is hydrogen-3, made up of one proton and two neutrons, which means it is a hydrogen isotope containing two neutrons. The other descriptions either refer to a nucleus with protons that would make it helium or to hydrogen with only one neutron (deuterium), not two.

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