Little polyatomic ions and molecules
and not so little organic molecule C6H12O6 (courtesy of Anita's group)
Rules of Bonding:
1. Fulfill octet for non-metals
2. Ionic charges balanced for cations and anions
3. Everyone still generally wants 8 electrons.
Which Bond is Which?
All bonded electrons are technically shared, not completely swapped, but some are more partial to a certain side than others.
If the electronegativities of the two bonding parties is within 0.5 of each other, it's nonpolar covalent. Joint custody/ unbroken household.
If the electronegativities are within 1.9 but don't qualify for non polar, they are polar covalent. The most polar a covalent bond can get is 1.9. Weekends and long holidays with one party, the rest of the time with primary caregiver.
If the electronegativities are 2.0 + apart from each other, it's considered a full swap ionic, because of the rarity with which the electron will be found on the less electronegative element. Like the last custody hearing in Mrs. Doubtfire but without 50 of the Saturdays.
8/27/2013
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