Hydrogen has three isotopes : protium (1H), deuterium (2H or D) and tritium (3H or T). They have nearly same chemical properties but different physical properties. They differ in :
Solution
<sup>1</sup>H, <sup>2</sup>H and <sup>3</sup>H have same atomic number but their
atomic masses are different.<br/><br/>
Isotopes have same atomic number (i.e. same number of protons)
About this question
Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family
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