The electric charge of one electron is equal in magnitude and opposite in sign to the charge of one proton The SI unit for charge is the coulomb (C), with protons and electrons having charges of opposite sign but equal magnitude; the magnitude of this basic charge is e ≡ 1.602 × 10 -19 C

An ion is an atom or molecule that has nonzero total charge due to having unequal numbers of electrons and protons The vast majority of positive charge in nature is carried by protons, whereas the vast majority of negative charge is carried by electrons.

electric charge — physical property of an object that causes it to be attracted toward or repelled from another charged object; each charged object generates and is influenced by a force called an…. SI unit for charge — the coulomb (C), with protons and electrons having charges of opposite sign but equal magnitude; the magnitude of this basic charge is e ≡ 1.602 × 10 -19 C. proton — particle in the nucleus of an atom and carrying a positive charge equal in magnitude to the amount of negative charge carried by an electron. electron — particle surrounding the nucleus of an atom and carrying the smallest unit of negative charge.