👉 In physics and chemistry, a hadron is a type of particle that contains quarks. Quarks are the elementary building blocks of protons, neutrons, and electrons in an atom. When two or more quarks come together to form a hadron, it creates a composite particle with properties similar to those of a proton, neutron, or electron. The term "hadrons" is often used to describe particles that have been produced through the fusion of protons, neutrons, and electrons