the electron and nucleus
1Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …
2Electron configuration — Electron atomic and molecular orbitals Simp …
3Electron paramagnetic resonance — (EPR) or electron spin resonance (ESR) spectroscopy is a technique for studying chemical species that have one or more unpaired electrons, such as organic and inorganic free radicals or inorganic complexes possessing a transition metal ion. The… …
4Electron cloud — is a term used, if not originally coined, by the Nobel Prize laureate and acclaimed educator Richard Feynman in The Feynman Lectures on Physics (Feynman2006 Vol 1 lect 6 pg 11) for discussing exactly what is an electron? . This intuitive model… …
5Electron scattering — is the process whereby an electron is deflected from its original trajectory. Electrons are charged particles and are acted upon by the electromagnetic forces. They are scattered by other charged particles through the electrostatic Coulomb forces …
6Electron affinity — The electron affinity, E ea, of an atom or molecule is the energy required to detach an electron from a singly charged negative ion, i.e., the energy change for the process::X rarr; X + e−An equivalent definition is the energy released ( E… …
7electron affinity — the energy released when a single electron is combined with an isolated atom; its value is determined by the effective charge on the nucleus and the size and electronic configuration of the atom …
8electron — /i lek tron/, n. 1. Also called negatron. Physics, Chem. an elementary particle that is a fundamental constituent of matter, having a negative charge of 1.602 × 10 19 coulombs, a mass of 9.108 × 10 31 kilograms, and spin of 1/2, and existing… …
9Electron shell — Periodic table with electron shells An electron shell may be thought of as an orbit followed by electrons around an atom s nucleus. The closest shell to the nucleus is called the 1 shell (also called K shell ), followed by the 2 shell (or L shell …
10Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …
