Of the four known fundamental forces of nature, the weak nuclear force ... The electromagnetic force ensures the stability of atoms and makes chemistry happen. The strong nuclear force holds ...

gravity and the weak nuclear force). The strong force holds together quarks, the fundamental particles that make up the protons and neutrons of the atomic nucleus, and further holds together ...

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.