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Our discussion of valence electron configurations leads us to one of the cardinal tenets of chemical bonding, the octet rule. The octet rule states that atoms become especially stable when their valence shells gain a full complement of valence electrons.
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www.sparknotes.com/chemistry/fundamentals/atomicstructu...
www.sparknotes.com/chemistry/fundamentals/atomicstructure/section2.rhtml
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SparkNotes online free test prep ... One final note about electron configurations. You can use the periodic table to quickly determine the valence electron configuration of each element. The valence electrons are the outermost electrons in an atom—the ones that are involved in bonding.
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www.sparknotes.com/testprep/books/sat2/chemistry/chapte...
www.sparknotes.com/testprep/books/sat2/chemistry/chapter4section5.rhtml
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Electron shell - Wikipedia, the free encyclopedia
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An electron shell may be thought of as an orbit followed by electrons around an atom nucleus. Because each shell can contain only a fixed number of electrons, each shell is associated with a particu...
en.wikipedia.org/wiki/Electron_shell
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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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then the subshell of the next energy level begins to be filled. The electrons on the highest numbered subshells are the valence electrons, which comprise the valence shell of the atom. ... Electron Configurations and Oxidation Numbers...
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www.cliffsnotes.com/WileyCDA/CliffsReviewTopic/Valence-...
www.cliffsnotes.com/WileyCDA/CliffsReviewTopic/Valence-Electrons.topicArticleId-21729,articleId-21673.html
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The valence electron configuration of Cr is <Ar>3d5 4s1 , whereas it should be <Ar>3d4 4s2 but it is not like that because there is more stability of the element if it is like 3d5 4s1 as 5 orbitals of d subshell and 1 orbital of...
http://wiki.answers.com/Q/What_is_the_valence_electron_...
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The name "valence electrons" obviously comes from the older idea of valences; the mysterious numbers Mendeleev used can now be explained via electron configurations. Look again at the applet and the valence chart below, and see if you can tell why the valence system worked and what the numbers really mean.
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www.colorado.edu/physics/2000/periodic_table/valence_el...
www.colorado.edu/physics/2000/periodic_table/valence_electrons.html
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For instance, oxygen has the ground state valence electron configuration, 2s22p4 Two of the p electrons are unpaired, therefore they should be displayed as single dots. ... Since Br only needs 1 electron to complete its valence shell, there must be 2 bromines to accept the electrons from calcium.
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www.csupomona.edu/~egoldstein/121/LDS-IonicE.HTM
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1. Draw orbital diagrams for the valence electrons for each of the following. Which would exhibit paramagnetism? a) C b) O c) N3- d) Mn2+ e) Sc3+; 2. Give full and abbreviated electron configurations for: a) Br b) Ag c) Fe d) S2- e) Ni2+;
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www.chem.latech.edu/~deddy/Lectnote/Chap7B.html
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