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11 grade chemistry others

The most abundant isotope of hydrogen is:A) TritiumB) DeuteriumC) ProtiumD) Para hydrogen

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The most abundant isotope of hydrogen is C) Protium.

Protium has one proton and no neutrons in its nucleus, making it the most common form of hydrogen, accounting for over 99.98% of naturally occurring hydrogen. Deuterium (option B) and tritium (option A) are less common isotopes of hydrogen. Para hydrogen (option D) refers to a different form of molecular hydrogen and is not an isotope of hydrogen itself.