Electron - Wikipedia
WEBThe electron ( e−. or. β−. ) is a subatomic particle with a negative one elementary electric charge. [13] . Electrons belong to the first generation of the lepton particle family, [14] and are generally thought to be elementary particles because they have no known components or substructure. [1] .
Atomic orbital - Wikipedia
WEBIn quantum mechanics, an atomic orbital ( / ˈɔːrbɪtəl /) is a function describing the location and wave-like behavior of an electron in an atom. [1] . This function describes the electron's charge distribution around the atom's nucleus, and can be used to calculate the probability of finding an electron in a specific region around the nucleus. [2]
Electron configuration - Wikipedia
WEBThe energy associated to an electron is that of its orbital. The energy of a configuration is often approximated as the sum of the energy of each electron, neglecting the electron-electron interactions. The configuration that corresponds to the lowest electronic energy is called the ground state.
Electron - Simple English Wikipedia, the free encyclopedia
WEBElectron. An 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 separate from any atom.
Atom - Wikipedia
WEBIf an atom has more or fewer electrons than its atomic number, then it becomes respectively negatively or positively charged as a whole; a charged atom is called an ion. Electrons have been known since the late 19th century, mostly thanks to J.J. Thomson; see history of subatomic physics for details.
Electron shell - Wikipedia
WEB(Top) History. Subshells. Number of electrons in each shell. Subshell energies and filling order. List of elements with electrons per shell. See also. References. Electron shell. In chemistry and atomic physics, an electron shell may be thought of as an orbit that electrons follow around an atom 's nucleus.
Atom - Simple English Wikipedia, the free encyclopedia
WEBBibliography. Other websites. Atom. A simplified picture of a helium atom, with two protons (red), two neutrons (white), and two electrons (blue) An atom is an extremely small piece of matter. All normal matter – everything that has mass – is made of atoms. This includes solids, liquids, and gases.
Valence electron - Wikipedia
WEBOverview. Electron configuration. The electrons that determine valence – how an atom reacts chemically – are those with the highest energy . For a main-group element, the valence electrons are defined as those electrons residing in the electronic shell of highest principal quantum number n. [1] .
Electron configuration - Simple English Wikipedia, the free …
WEBAn electron configuration is the arrangement of electrons within an atom. The electron configuration describes where the electrons are inside orbitals. The structure of the Periodic table of elements is partly based on electron configuration. There are four kinds of electron configurations: s, p, d, and f orbitals.
Electron - Wikiwand
WEBThe electron 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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