Unformatted text preview: AB 4 Species (No Lone Pairs of Electrons on A) Some examples of molecules with this geometry are: – CH 4 , CF 4 , CCl 4 , SiH 4 , SiF 4 All of these examples are tetrahedral, nonpolar molecules. Important exceptions occur when the four substituents are not the same! – CF 3 Cl or CH 2 CI 2 will be tetrahedral and polar! Tetrahedral electronic arrangement: AB 4 Species (No Lone Pairs of Electrons on A)...
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- Fall '07
- Valence, Molecule, Chemical bond, Chemical polarity, Planar electronic arrangement