Question

how do the three isotopes of hydrogen differ

Answer 1

They differ in number of neutrons present in their nucleus

Number of nuetrons in...
Hydrogen - 0
Deuterium - 1
Tritium - 2

Answer 2

The meaning of isotopes is that having same atomic number but different in atomic mass and also isotopes have same atomic number so that there are equal number of electron and proton so that chemical reaction of this element is same they are different in only neutron hydrogen have three isotopes like protium which have no neutron only one proton so atomic mass is 1 second is deuterium which have 1 proton and 1 neutron so atomic mass of deuterium is 2 and third is tritium which is radio transitie element and have 2 neutron and 1 proton all three are react with other in same manner