For the symbol H,D and T tabulate three sub-atomic particles found in each of them.

Explanation

H, D and T are the three isotopes of hydrogen having the same atomic number 1 but different mass numbers of 1, 2 and 3 respectively. The symbol H stands for ordinary Hydrogen (of mass number 1), the symbol D stands for Deuterium (which is heavy hydrogen of mass number 2) and symbol T stands for Trutium (which is very heavy hydrogen of mass number 3). The three sub-atomic particles, electrons, protons and neutrons, in the three isotopes of hydrogen are given in the following table :