electron transition
31Transition électronique moléculaire — Les transitions électroniques moléculaires se produisent lorsque les électrons de valence sont excités à partir d un niveau d énergie vers un niveau plus élevé. L écart d énergie associé avec cette transition fournit de l information sur la… …
32transition — n. 1 a passing or change from one place, state, condition, etc., to another (an age of transition; a transition from plain to hills). 2 Mus. a momentary modulation. 3 Art a change from one style to another, esp. Archit. from Norman to Early… …
33Transition metal dioxygen complex — Dioxygen complexes are coordination compounds that contain O2 as a ligand.[1] The study of these compounds is inspired by oxygen carrying proteins such as myoglobin, hemoglobin, hemerythrin, and hemocyanin.[2] Several transition metals form… …
34Électron de cœur — En physique ou en chimie, les électrons de cœur sont des électrons dont on considère qu ils sont très fortement liés à leur atome et ne contribuent pas à la liaison chimique, par opposition aux électrons de valence. Selon le contexte, l… …
35electron — One of the negatively charged subatomic particles that orbit the positive nucleus, in one of several energy levels called shells; in mass they are estimated to be 1/1836.15 of a proton; when emitted from inside the nucleus of a radioactive… …
36transition element — noun any of the group or metallic elements that have an incomplete inner (d) electron shell; they have multiple valencies and form coloured compounds and stable complex ions; the elements …
37Transition metal dinitrogen complex — Structure of [Ru(NH3)5(N2)]2+ …
38transition element — /trænˈzɪʃən ɛləmənt/ (say tran zishuhn eluhmuhnt) noun any of numerous metallic elements in which the two outermost electron shells are incomplete; they have variable valencies and coloured ions. Also, transition metal …
39Molecular electronic transition — Molecular electronic transitions take place when electrons in a molecule are excited from one energy level to a higher energy level. The energy change associated with this transition provides information on the structure of a molecule and… …
40Core electron — Core electrons are the electrons in an atom that are not valence electrons and therefore do not participate in bonding. An example: the carbon atom has a total of 6 electrons, 4 of them being valence electrons. So the remaining 2 electrons must… …
