| 词条 | Abegg's rule |
| 释义 |
In chemistry, Abegg’s rule states that the difference between the maximum positive and negative valence of an element is frequently eight. The rule used a historic meaning of valence which resembles the modern concept of oxidation state in which an atom is an electron donor or receiver. Abegg’s rule is sometimes referred to as "Abegg’s law of valence and countervalence". In general, for a given chemical element (as sulfur) Abegg’s rule states that the sum of the absolute value of its negative valence (such as −2 for sulfur in H2S and its positive valence of maximum value (as +6 for sulfur in H2SO4) is often equal to 8. HistoryThe concept was formulated in 1904 by German chemist Richard Abegg.[1] Gilbert N. Lewis was one of the first to refer to the concept as "Abegg's rule" when he used it as a basis of argument in a 1916 article to develop his cubical atom theory, which developed into the octet rule.[2] That article helped inspire Linus Pauling to write his 1938 textbook The Nature of the Chemical Bond.[3] See also
References1. ^{{Cite journal| doi = 10.1002/zaac.19040390125| volume = 39| issue = 1| pages = 330–380| last = Abegg| first = R.| title = Die Valenz und das periodische System. Versuch einer Theorie der Molekularverbindungen | trans-title = Valency and the periodic table. Attempt at a theory of molecular compounds| journal = Zeitschrift für anorganische Chemie| year = 1904| language = German| url = https://babel.hathitrust.org/cgi/pt?id=uc1.b3959087;view=1up;seq=344}} 2. ^{{Cite journal| volume = 38| issue = 4| pages = 762–785| last = Lewis| first = Gilbert N.| title = The atom and the molecule| journal = Journal of the American Chemical Society| date = 1916-04-01| url = https://babel.hathitrust.org/cgi/pt?id=hvd.hs1t2w;view=1up;seq=772| doi = 10.1021/ja02261a002}} 3. ^{{Cite book| edition = 3| publisher = Cornell University Press| isbn = 0-8014-0333-2| last = Pauling| first = Linus| title = The Nature of the Chemical Bond and the Structure of Molecules and Crystals; An Introduction to Modern Structural Chemistry.| date = June 1960}} External links
1 : Chemistry theories |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。