The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and one electron in the region outside the nucleus. The electron and proton are attracted to each other.

He called it a neutron, and imagined it as a paired proton and electron. There was no evidence for any of these ideas. Chadwick kept the problem in the back of his mind while working on other things.

The ion has two positive protons but one electron so it is a positive ion. Helium ion, two neutrons, two protons and three electrons. Nuclear fission close nuclear fissionThe splitting of a large ...

Protons have a charge of +1. Electrons have a charge of -1. Neutrons are neutral ... electrons may exist in the atom's second shell. An electron may "drop" from an outer shell if an inner shell ...

These nuclei had specific numbers of protons or neutrons, or magic numbers ... In Bohr's model, if an electron orbit is not ...