Ionic Radii - Electronegativity is a measure of the...

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Ionic Radii Cations (positive ions) are always smaller than their respective neutral atoms. Anions (negative ions) are always larger than their neutral atoms. Cation (positive ions) radii decrease from left to right across a period. Increasing nuclear charge attracts the electrons and decreases the radius. Anion (negative ions) radii decrease from left to right across a period. Increasing electron numbers in highly charged ions cause the electrons to repel and increase the ionic radius. Electronegativity
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Unformatted text preview: Electronegativity is a measure of the relative tendency of an atom to attract electrons to itself when chemically combined with another element . Electronegativity is measured on the Pauling scale. Fluorine is the most electronegative element. Cesium and francium are the least electronegative elements. For the representative elements, electronegativities usually increase from left to right across periods and decrease from top to bottom within groups....
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This note was uploaded on 10/14/2011 for the course CHEM 1211 taught by Professor Atwood during the Fall '07 term at University of Georgia Athens.

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