Chemical Forums
Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: zain on January 12, 2008, 06:56:57 AM
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Hey guys
the question is quite simple what will the the Z+/Z- be?. i mean theres relative charges like +1 and -1... or will it be in coulombs?
Many thanks, Zain
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Relative charges. Note that in the numerator of the equation, you have an e2 term which converts the Z+ and Z- to actual values of charge.
In general, Z will be used to refer to relative charges, while q will be used to refer to the absolute value of charge.
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many thanks
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one more question
what is the born exponent?
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n =Born repulsion exponent (integer depends on VSE configuration, varies from 5 to 12). n, the Born exponent is specific to each ion - for a lattice the values of the cation and anion are averaged.
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i think i understand.
for example what would it be for LiF?
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Check This Link: http://www.wiredchemist.com/chemistry/data/born_exponent.html
And read this paper-short and to the point...: http://database.iem.ac.ru/mincryst/glasser.pdf
reference Pg. 3 and 4.