Question

Why isn't there any neutron in a hydrogen atom?

Answer 1

unlike other elements, hydrogen, which has just one proton, does not require any neutrons to be stable. In all other elements, which all have multiple protons, stable nuclei are only formed if neutrons (which have no net charge) are present in the nucleus. This is because the multiple protons repel each other due to their electrical charge (+1). The neutrons, which have no charge, still bind together via the strong force, which then helps to counteract the repulsion amongst the protons. but since hydrogen has only one proton so there is no repulsion, Hence there is no need for proton