Question

Describe the protons, electrons, and neutrons of an atom of hydrogen-2.

Answer 1

1 proton, 1 neutron and 1 electron.

Step-by-step explanation:

This isotope of hydrogen, also called deuterium, has 1 neutron in the nucleus. Deuterium oxide is present in heavy water.

Answer 2

However, various hydrogen isotopes, such as H-2, have one proton and one neutron; H-3 has one proton and two neutrons, etc. The sum of the protons and neutrons in an atom's nucleus is its atomic mass. Thus, the atomic mass of the H-2 isotope is two, the atomic mass of the H-3 isotope is three, and so forth.

Step-by-step explanation: