- Abegg's rule
In
chemistry , Abegg’s rule states that the difference between the maximum positive and negative valence of an element is frequently eight. In general, for a given chemical element (assulfur ) Abegg’s rule states that the sum of the absolute value of its negative valence of maximum absolute value (as −2 for sulfur in "H2S") and its positive valence of maximum value (as +6 for sulfur in "H2SO4") is often equal to 8. The rule was formulated in 1904 by German chemistRichard Abegg . It was used as a basis of argument inGilbert N. Lewis ’ 1916 famous article " [http://dbhs.wvusd.k12.ca.us/webdocs/Chem-History/Lewis-1916/Lewis-1916.html The Atom and the Molecule] ", an article which later inspiredLinus Pauling to write the famous 1938 textbook "The Nature of the Chemical Bond". Lewis used this rule to develop hiscubical atom theory, which later developed into theoctet rule . Abegg’s rule is sometimes referred to as "Abegg’s law of valence and countervalence".ee also
*
History of the molecule External links
* [http://www.oedilf.com/db/Lim.php?Word=Abegg's%20Rule Abegg’s rule] - Omnificent English Dictionary In Limerick Form
* [http://www.3rd1000.com/history/nuclear.htm Nuclear Atom] - contains and excerpt of Abegg's contributions.
Wikimedia Foundation. 2010.