Can an atom have 1 proton and no neutrons?

Answer 1

No, it cannot. Protons carry a positive electrostatic charge, and like charges repel each other. There is no way for more than one proton to create an atomic nucleus without the help of the neutron. Note that all the nucleons, the protons and neutrons that make up the nucleus, each have to give up a bit of their mass and have it converted to binding energy (or nuclear glue) to keep all the particles stuck together in that nucleus.

Answer 2

We don't find an atom with only two protons in its nucleus. Only the atom of hydrogen-1 has no neutrons. But there is something about a proton pair we might want to consider.

In stars, we find two protons fused in what is called a proton-proton chain reaction, but one proton immediately undergoes beta minus decay and becomes a neutron. We'll then see a hydrogen-2 nucleus (a proton and a neutron) in the place of the two protons. This isotope of hydrogen will undergo further fusion reactions in stellar nucleosynthesis.

Answer 3

Such an atom does not exist. If it were somehow made in a laboratory it would spontaneously decay

Answer 4

Yes. The vast majority of hydrogen atoms are like this.

Answer 5

I don't think so.

Answer 6

yes. for the isotope of hydrogen - 1H1

Answer 7

This atom doesn't exist.