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There are three types of particle you will find inside an atom; the proton, the neutron, and the electron. Of these, the proton and neutron each have mass '1', and the electrons mass is so small, we usually ignore it (about 1/1836, if you were wondering). Of these particles, the electron and the proton are both charged. The proton has a positive charge, and the electron has a negative charge. This is what keeps the electrons close, and this charge allows atoms to bond together to form molecules. The protons and neutrons form a stable nucleus, and the electrons orbit around them.

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11y ago

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