Question

what is heavy hydrogen​

Answer 1

Answer:

Deuterium is called heavy hydrogen

Explanation:

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Answer 2

Answer:

Deuterium is also known as "heavy hydrogen" because of the extra neutron in the atomic nucleus. [Hydrogen has a third isotope called tritium, with a proton and two neutrons, but it radioactively decays in a short time and is unimportant for the observations