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The charge on electron and proton is an assumption, these particles have attraction towards each other, the electron was assumed to be negative and proton positive it may be reversed some where in the universe.

By definition, the electron is a subatomic particle that carries a negative electric charge. It has no known substructure and is believed to be a point particle.

You may note that the positron or antielectron is the antiparticle or the antimatter counterpart of the electron. The positron has a positive charge, and the same mass as an electron.

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14y ago

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