Hydrogen have one proton but have no neutron .But in the case od isotope neutrons are present?why?🤔🤔
Hydrogen which is abundant is protium an isotope (99.985%) contains 0 neutron and 1 proton Deuterium is found in very small quantity(0.0156%) has 1 neutron and 1 proton Tritium is unstable and has 2 neutrons and 1 proton
Thankyou Theresa👍