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3 overheads Bonding

3 overheads Bonding - summary...

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summary http://www.chem1.com/acad/webtext/atoms/atpt 6.html
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Cohesive energy Kittel, solid state physics http://chemistry.about.com/library/pdfs/PeriodicTableMeltPoint.pdf
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Melting point table Kittel, solid state physics http://chemistry.about.com/library/pdfs/PeriodicTableMeltPoint.pdf
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Melting point vs Cohesive energy Data from Kittel Prog Sol State Chem v35p1 2007 size dep of nanostructures impact of bond order
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Nanoparticle size effect on cohesive energy Cohesive energy is a linear fcn of of surface energy per area B lk bi di E Prefactor, > 1 Surface energy Bulk binding Energy Atom diameter Cohesive energy of a nanoparticle J Mater Sci v21p1743 (2002)
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Van der Waals Neutral atoms with closed electron shells bound together weakly Ionic Electrons transferred from the alkali atoms to the halogen atoms. R lti i h ld Resulting is held together by electrostatic forces Covalent metallic Valence electrons taken away from alkali atom to form an Bound together by overlapping electron distributions electron sea. Positive ions are dispersed in the sea Kittel, solid state physics
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Predicting the ionic character of the bond http://www.chem.umass.edu/people/botch/Chem121F05/Chapters/Ch3/PercentIonic.jpg
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NaCl Si Ibach, solid state physics p12
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The extent of metal wavefunctions Ibach, solid state physics p13
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