Question

Hydrogen has 3 isotopes 1 H 2 H and 3 H. What is the difference between these 3 isotopes

Answer 1

Short answer is that they have different atomic masses.

Answer 2

See below.

Step-by-step explanation:

1 H (hydrogen) has a nucleus of just 1 proton.

2 H (deuterium) has a nucleus of 1 proton and 1 neutron

3 H (tritium) has a nucleus of 1 proton and 2 neutrons.