Isotopes of Hydrogen by keypoint There are three isotopes of hydrogen, which are: 1. Protium i.e. 11H 2. Denterium i.e. 12H 3. Tritium i.e. 13H Others are Viewing: Hydrogen Laboratory Preparation of Hydrogen Physical Properties of Hydrogen Chemical properties of Hydrogen Uses of Hydrogen Hydrogen Sulphide (H2S) Uses of Hydrogen Sulphide (H2S)