“、onium”的英文意思_释义_用法

单词

-onium

释义

-onium, suffix
[abstracted from ammonium.]
1. Chem. Used in forming the names of complex cations that contain a more or less electronegative central atom, usu. bonded to a number of protons (or to other species that are regarded as substituents), as arsonium, carbonium, hydrazonium, nitronium, oxonium, phosphonium, tetrachlorophosphonium, etc.
1971Nomencl. Inorg. Chem. (I.U.P.A.C.) (ed. 2) 20 Names for polyatomic cations derived by addition of more protons than required to give a neutral unit to monatomic anions, are formed by adding the ending -onium to the root name of the anion element.
2. Particle Physics. [Abstracted from positronium.] Used in forming the names of bound states of a particle and its antiparticle, as charmonium, toponium.

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