The most common isotope of hydrogen is sometimes referred to as ________.

Question

Quizplus · Accepted Answer

The most common isotope of hydrogen is referred to as protium, which has one proton and no neutrons in the nucleus. Deuterium (choice A) is another isotope of hydrogen which has one proton and one neutron in the nucleus. Tritium (choice C) is an unstable isotope of hydrogen which has one proton and two neutrons in the nucleus. Heavy hydrogen (choice D) is a general term that can refer to any isotope of hydrogen with more than one proton or more than one neutron in the nucleus, including deuterium and tritium. Common hydrogen (choice E) is not a commonly used term to describe any particular isotope of hydrogen.

The Most Common Isotope of Hydrogen Is Sometimes Referred to as ________