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The charge of an electron is -1, and has a smaller mass of a proton. (For you Castle Learning users) :]

negative charge

An electron carries one fundamental unit of negative charge*, measured to be about 1.609 x 10-19 Coulombs.

(* The negative designation is a convention, established in the earliest experiments with electricity long before the existence of the electron was known.)

A proton has a +1 charge.

A neutron does not have a charge, it is neutral.

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