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An atom is made up of negatively-charged electrons, positively-charged protons, and neutral neutrons. (The alliteration for positive protons and neutral neutrons helps in memorizing their charges. Electrons are just whatever charge is left over.)

The protons and neutrons make up the nucleus while electrons float around in the surrounding electron cloud, which is bound to the nucleus by the attraction to the oppositely charged protons via electromagnetic force.

Electrons are significantly smaller than protons and neutrons.

Protons and neutrons can further be broken down into what are known as quarks.

Science is amazing.

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14y ago

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