Q. 14.1( 62 Votes )

For the symbols H

Answer :

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:



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