What is proton definition?

Protons are subatomic particles with a positive electric charge, with a charge of +1 and a mass of approximately 1 atomic mass unit. They are one of the three main particles that make up an atom, along with neutrons and electrons. Protons are located in the nucleus of an atom, alongside neutrons, and together they make up the majority of the atom's mass. The number of protons in an atom's nucleus is known as the atomic number, which determines the element's identity on the periodic table. Protons are important in chemistry and physics because they play a crucial role in chemical bonding and electromagnetic interactions.