Unformatted text preview: 3 ) or • all the atoms bonded to the central atom are identical AND there are no nonbonding electrons on the central atom (eg. CCl 4 ). 2. A molecule or polyatomic ion is polar if : • the molecule has polar bonds AND there is at least 1 nonbonding electron pair on the central atom. There are two main exceptions to this: • The square planar geometry that results when there are 2 nonbonding electron pairs on the central atom is nonpolar (eg. XeF 4 ). • The linear geometry that occurs when there are 3 nonbonding electron pairs on the central atom is nonpolar (XeF 2 )....
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This note was uploaded on 01/28/2010 for the course CHM 71476 taught by Professor Marks during the Spring '10 term at ASU.
- Spring '10