nuclear isomer
81Mössbauer effect — Physics. the phenomenon in which an atom in a crystal undergoes no recoil when emitting a gamma ray, giving all the emitted energy to the gamma ray, resulting in a sharply defined wavelength. [1955 60; named after R. MÖSSBAUER] * * * ▪ physics… …
82Alkane — Not to be confused with Alkene or Alkyne. Chemical structure of methane, the simplest alkane Alkanes (also known as paraffins or saturated hydrocarbons) are chemical compounds that consist only of hydrogen and carbon atoms and are bonded… …
83Isomerieverschiebung — Die Isomerieverschiebung ist ein physikalischer Effekt, der sich darin äußert, dass die Lagen der Spektrallinien in Atomspektren und Gammastrahlung unterschiedlicher Isomere eines chemischen Elements nicht identisch sind. Im Falle von… …
84Nobelium — mendelevium ← nobelium → lawrencium Yb ↑ No ↓ (Upb) …
85Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
86Gold — This article is about the metal. For the color, see Gold (color). For other uses, see Gold (disambiguation). platinum ← gold → mercury …
87Ununhexium — ununpentium ← ununhexium → ununseptium Po ↑ Uuh ↓ (Uhh) …
88Isotopes of copper — Copper (Cu) has two stable isotopes, 63Cu and 65Cu, along with 27 radioisotopes. The most stable of these is 67Cu with a half life of 61.83 hours. The least stable is 54Cu with a half life of approximately 75 ns. Most have half lives… …
89isomerism — /uy som euh riz euhm/, n. 1. Chem. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism), as CH3OCH3 and… …
90Ununquadium — (pronEng|ˌjuːnənˈkwɒdiəm [ [http://reference.aol.com/columbia/ a/ununquadium/20051207161909990014 ununquadium AOL Research Learn ] ] or IPA|/ˌʌnənˈkwɒdiəm/ [ [http://dictionary.reference.com/browse/ununquadium ununquadium Definitions from… …
