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Unformatted text preview: But it doesn’t have an expanded octet—so don’t choose this one! Answer b is wrong because it is an ionic compound. Answer c is correct. It exceeds the octet rule, and is polar. You can tell it is polar because of the lone pair. The structure (below) shows that the dipoles do not completely cancel each other out. Answer d is wrong because it does not exceed the octet rule and is non-polar. O = Si = O Answer e This is an ionic compound, not a molecular compound. It forms a lattice, not a molecule. Answer f (methane) is wrong because it does not exceed the octet rule and is non-polar. Answer g is wrong because although it is polar, it does not exceed the octet rule....
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- Fall '08
- VSEPR, Molecule