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.

Quarks are the reason protons have a positive charge. Each quark has a fraction of an electric charge. A proton has two up ...

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.

During typical DVCS, a nucleon (proton and neutron collectively) interacts with an electron. This reaction transfers some of ...

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 ...

In the most common form of this decay, beta-minus decay, a neutron decays into a proton, also spitting out a negatively charged electron in order to conserve electric charge; beta-plus decay does ...

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.