| 单词 | oxidation number |
| 释义 | > as lemmasoxidation number oxidation number n. a number representing the degree of oxidation of an element in a particular ion, molecule, or substance, being a notional electric charge equal to the number of electrons lost (or gained, if the number is negative) by an atom of the element in forming the species or substance, all bonding being assumed to be completely ionic. ΘΚΠ the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > oxidation > oxidation number oxidation number1935 1935 Jrnl. Amer. Chem. Soc. 57 1232/2 The ratio..of the oxidation equivalents to this difference..shows how much the oxidation number of the argentic silver exceeds that of argentous silver. 1964 D. J. Cram & G. S. Hammond Org. Chem. (ed. 2) vi. 98 The system described is similar to the inorganic system if effective oxidation numbers, ranging from −4 (in CH4) to +4 (CCl4 or CO2), are assigned to individual carbon atoms within organic molecules. 1987 M. H. Freemantle Chem. in Action (BNC) 128 The ion with the higher oxidation number is given the suffix -ic and the one with the lower oxidation number -ous. < as lemmas |
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