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Electron | Definition, Mass, & Facts | Britannica
https://www.britannica.com/science/electron
WEBMar 15, 2024 · Electron, lightest stable subatomic particle known. It carries a negative charge of 1.6 x 10^-19 coulomb, which is considered the basic unit of electric charge. The electron was discovered in 1897 by the English physicist J.J. Thomson during investigations of cathode rays.
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Electron - Wikipedia
https://en.wikipedia.org/wiki/Electron
WEBThe electron (e − or β −) is a subatomic particle with a negative one elementary electric charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure. The electron's mass is approximately 1/1836 that of the proton.
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What Is an Electron? Definition and Facts - Science Notes and …
https://sciencenotes.org/what-is-an-electron/
WEBDec 8, 2018 · An electron is a subatomic particle with a negative electrical charge. Electrons are subatomic particles. Atoms are made of protons, neutrons, and electrons. Of these three particles, the electron has the smallest mass. Here is the definition of the electron, along with its word origin, history, and interesting facts.
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Electron configurations article (article) | Khan Academy
https://www.khanacademy.org/science/physical-chemistry-essentials/x98cdf762ed888601:structure-of-atom/x98cdf762ed888601:electronic-configuration-of-atom/a/electron-configurations-article
WEBElectron configurations are a simple way of writing down the locations of all of the electrons in an atom. As we know, the positively-charged protons in the nucleus of an atom tend to attract negatively-charged electrons.
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Introduction to electron configurations (video) | Khan Academy
https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:atomic-structure-and-electron-configuration/v/introduction-to-electron-configurations
WEBAbout. Transcript. Electron configurations describe where electrons are located around the nucleus of an atom. For example, the electron configuration of lithium, 1s²2s¹, tells us that lithium has two electrons in the 1s subshell and one …
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The periodic table, electron shells, and orbitals - Khan Academy
https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:atomic-structure-and-electron-configuration/a/the-periodic-table-electron-shells-and-orbitals-article
WEBElectron configurations and the periodic table. Elements are placed in order on the periodic table based on their atomic number, how many protons they have. In a neutral atom, the number of electrons will equal the number of protons, so we can easily determine electron number from atomic number.
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Electron - Simple English Wikipedia, the free encyclopedia
https://simple.wikipedia.org/wiki/Electron
WEBAn electron is a very small piece of matter. Its symbol is e −, and it was discovered by J. J. Thomson in 1897. The electron is a subatomic particle. Every atom is made of some electrons that surround the nucleus of the atom. An electron can also be …
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Atom - Electrons, Protons, Neutrons | Britannica
https://www.britannica.com/science/atom/Discovery-of-electrons
WEBelectrons. During the 1880s and ’90s scientists searched cathode rays for the carrier of the electrical properties in matter. Their work culminated in the discovery by English physicist J.J. Thomson of the electron in 1897. The existence of the electron showed that the 2,000-year-old conception of the atom as a homogeneous particle was wrong ...
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8: Electrons in Atoms - Chemistry LibreTexts
https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_General_Chemistry_(Petrucci_et_al.)/08%3A_Electrons_in_Atoms
WEBJul 12, 2023 · In this chapter, we describe how electrons are arranged in atoms and how the spatial arrangements of electrons are related to their energies. We also explain how knowing the arrangement of electrons in an atom enables chemists to predict and explain the chemistry of an element.
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Electron Definition in Science - ThoughtCo
https://www.thoughtco.com/definition-of-electron-chemistry-604447
WEBUpdated on July 24, 2019. An electron is a stable negatively charged component of an atom. Electrons exist outside of and surrounding the atom nucleus. Each electron carries one unit of negative charge (1.602 x 10 -19 coulomb) and has a small mass as compared with that of a neutron or proton.
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