The characteristic property of hydrogen:
Hydrogen has atomic number 1 and has 1 electron and 1 proton.
The element hydrogen has three isotopes and have different properties
First isotope is Protium which has 1 atomic mass.
Second isotope is Deuterium which has 2 atomic mass.
Third isotope is Tritium which has 3 atomic mass.
Note: Isotopes- In certain elements, some atoms have the same atomic number but different atomic mass number. Such atoms of an element are called isotopes of that element.
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