Question

Which istospes of hydrogen atom have same number of electrons protons And neutrons and how much is the number

Answer 1

Hydrogen 1 has one proton, one electron and no neutrons.

Hydrogen 2 has one proton, one electron and one neutron.

Hydrogen 3 has one proton, one electron and two neutrons.

All hydrogen isotopes have one proton and one electron the only difference is the number of neutrons.

Answer 2

Deuterium or it can also be written has 2H.

This isotope of Hydrogen has 1 proton, 1 electron and unlike Protium and Tritium which have 0 and 2 neutrons respectively it has 1 neutron in its nucleus.