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Many people believe that the valences of the elements are those which can be derived by looking at the Groups (columns) of the Periodic Table. It is true that these are the most common valences, but the real behavior of electrons is less simple.
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chemistry.about.com/library/weekly/aa122002a.htm
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If you're curious about the number of bonds formed by other elements, there is a new printable periodic table of element valence that may interest you ... Valences of the Elements - Chemistry of the Periodic Table...
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chemistry.about.com/b/2009/07/23/element-valence-period...
chemistry.about.com/b/2009/07/23/element-valence-periodic-table.htm
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Valence electron - Wikipedia, the free encyclopedia
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In science, valence electrons are the outermost electrons of an atom, which are important in determining how the atom reacts chemically with other atoms. Atoms with a complete shell of valence elect...
en.wikipedia.org/wiki/Valence_electron
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An updated version of this lesson is available at Visionlearning: The Periodic Table ... The Periodic Table of Elements (or the Periodic Table for short) was first proposed by a Russian chemist named Dmitri Mendeleev in 1871. A modern version of the Table appears below. Atoms are ordered by their atomic number in...
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web.jjay.cuny.edu/~acarpi/NSC/4-pertab.htm
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In doing so, we discover that the periodic table is a representation of the valences of the elements: elements in the same group all share a common valence. The inert gases with a valence of 0 sit to one side of the table.
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www.vias.org/genchem/covbonds_12584_02.html
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The periodic table shown here is severely truncated. There are, of course, over eighty other elements. A complete periodic table, having very useful interactive links has been created by Mark Winter. Click on the link to ... The valences noted here represent the most common form these elements assume in organic compounds.
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www.cem.msu.edu/~reusch/VirtualText/intro2.htm
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The concept that Mendeleev found most helpful in laying out his table was the notion of valences, proposed in 1852 by the English chemist Sir Edward Frankland. ... Back to Origin of the Periodic Table...
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www.colorado.edu/physics/2000/periodic_table/valences.h...
www.colorado.edu/physics/2000/periodic_table/valences.html
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The elements that became the second and third rows of the periodic table, beginning with lithium (valence 1), followed the sequence perfectly. In the fourth row, things became a bit messier, because the transition metals didn't seem to fit the pattern--some of them even had more ... The complete table, in terms of valences,
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www.colorado.edu/physics/2000/periodic_table/valence_pa...
www.colorado.edu/physics/2000/periodic_table/valence_pattern.html
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