For the symbols H, D and T, tabulate three subatomic particles found in each of them.

Hydrogen has three isotopes,  protium (H¹₁), deuterium (H²₁  or D²₁) and tritium (H³₁ or T³₁). The chemical properties of isotopes are similar but their physical properties are different. They have same atomic  number but different mass numbers.

The three subatomic particles, electrons, protons and neutrons, in the three isotopes of hydrogen are given in the following table: