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Topic: resonance structures  (Read 5379 times)

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Offline is3zzz

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resonance structures
« on: November 14, 2007, 05:39:41 PM »
I want to make sure this is right..
sulfur dioxide has 2 resonance structures
and the nitrous anion has 3 resonance structures right?
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Offline LQ43

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Re: resonance structures
« Reply #1 on: November 14, 2007, 07:54:18 PM »
yes, sulfur dioxide SO2 does have 2 resonance structures

NO2- (nitrous anion - or nitrite also called) has only 2 resonance structures

NO3- (nitrate anion) has 3 resonance structures,
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Offline is3zzz

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Re: resonance structures
« Reply #2 on: November 14, 2007, 08:07:37 PM »
Thanks... for further info....
Methane has only 1 resonance structure? (since its only a tetrahedral)
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Offline LQ43

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Re: resonance structures
« Reply #3 on: November 14, 2007, 08:19:37 PM »
correct
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Offline nlee5687

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Re: resonance structures
« Reply #4 on: November 14, 2007, 08:20:13 PM »
Hmmm Methane.... I don't think a resonance structure even exist for this one.. Anyone got a clue?
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Offline LQ43

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Re: resonance structures
« Reply #5 on: November 14, 2007, 09:21:42 PM »
I think he meant only one Lewis structure possibility, no resonance there, so I said correct,
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Offline sjb

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Re: resonance structures
« Reply #6 on: November 15, 2007, 04:40:35 AM »
Quote from: nlee5687 on November 14, 2007, 08:20:13 PM
Hmmm Methane.... I don't think a resonance structure even exist for this one.. Anyone got a clue?

Formally at least you can envisage forms like Me- H+, or Me+ H-. However these are much higher in energy than the fully covalent structure so do not contribute much to the hybrid

S
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