Lewis dot diagrams elements, Electron distributions into shells for the first three periods. a chemical element is identified by the number of protons in its nucleus, and it must collect an equal. Electron | define electron dictionary., Electron definition, also called negatron. physics, chemistry. an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602. Chem4kids.: elements & periodic table: periodic table, Chem4kids.com! this tutorial introduces the periodic table. other sections include matter, elements, reactions, and biochemistry..

Applet: electron configurations, Use applet explore order atomic shells filled electrons. wie start hydrogen (=1). change charge, . http://lectureonline.cl.msu.edu/~mmp/period/electron.htm Electron - wikipedia, The electron subatomic particle, symbol − β −, negative elementary electric charge. electrons belong generation lepton. https://en.wikipedia.org/wiki/Electron Orbitals (video) | chemistry life | khan academy, Introduction orbitals. relates energy shell rows periods periodic table.. https://www.khanacademy.org/science/biology/chemistry--of-life/electron-shells-and-orbitals/v/orbitals