What is the charge of a proton?

The charge of a proton is +1. Protons are one of the three primary particles that make up an atom, along with neutrons and electrons. The positive charge of the proton contrasts with the negative charge of the electron, which is essential for the structure of atoms. The charge of a proton contributes to the overall positive charge of the atomic nucleus, as each proton carries a charge of +1 elementary charge unit. This positive charge is crucial in defining the identity of an element, as the number of protons in the nucleus determines the element's atomic number and its position in the periodic table.

Understanding that protons have a positive charge helps clarify the nature of chemical interactions, as like charges repel and opposite charges attract. This concept is fundamental in explaining how atoms bond together to form molecules and compounds.