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• 08:09, 22 May 2025 Thakshashila talk contribs created page Electrons (Created page with "= electrons – negatively charged particles in atoms = == what is an electron? == An '''electron''' is a subatomic particle with a negative electric charge. Electrons are found in orbitals or energy levels surrounding the nucleus of an atom. == basic properties == * symbol: e⁻ * charge: -1 * mass: ~1/1836 of a proton * location: outside the nucleus, in electron shells == discovery == j.j. thomson discovered the electron in 1897 using catho...")