# Electric Charges

How does the charge of one electron compare to that of another electron? How does it compare with the charge of a proton?

How do the numbers of protons in the atomic nucleus compare to the number of electrons that orbit the nucleus?

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1. I will be happy to critique your thinking. It is not nice to post a lot of questions with each a different name. Usually, slackers or answer moochers do that.

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bobpursley
2. All electrons have the same charge. Protons have the opposite charge. Atoms have as many protons as electrons, so they are electrically neutral.

If protons don't have the opposte charge of electron, then atoms are not exactly neutral. This will lead to certain observable effects as discussed in this article:

http://arxiv.org/abs/hep-ph/0310066

These effects can be used to derive strong contraints on the net charge of atoms.

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