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![[Post New]](/templates/default/images/icon_minipost_new.gif) 13 Feb 2007 20:49:05 IST
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can anybody tell me, why benzene show resonance?
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13 Feb 2007 20:51:46 IST
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because it has three double bonds which can be positioned alternately within the hexagonal ring depending upon the stability...there are many possibilities of existence of benzene or where the bonds lie...we have no way of defining them so we use resonance
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tomorrow theres another possibility |
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13 Feb 2007 20:57:23 IST
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Benzene shows resonance in order to gain stability. All aeromatic compounds like benzene show resonance and are so very much stable. During resonance, during the process of delocalization of bonds some energy is released (Resonance energy) which decreases the total energy content in the system providing it more stability.
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~ANSHUMAN
I was born intellegent, education ruined me. |
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13 Feb 2007 20:58:55 IST
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yup!!
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tomorrow theres another possibility |
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13 Feb 2007 22:07:30 IST
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one of the necessary conditions behind a compound showing resonance is that:- it should have alternate double and single bomds.. which is satisfied by benzene......any ways there might be other reasons due to which it shows resonance...
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u can ask any query u wan
2 me |
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14 Feb 2007 13:06:06 IST
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Resonance occurs in the foll cases: 2)   lone pair 3) -ve charge 4) +ve charge 5) unpaired electrons kghedriu
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14 Feb 2007 21:03:23 IST
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IT SHOW RESONANCE BECAUSE BY THIS IT BECAME STABLE
BY ENERGY CALLED REONANCE ENERGY SO IT UNDERGO RESONANCE TO BECAME STABLE
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<TABLE CELLSPACING="1" CELLPADDING="1" BORDER="0">
<TR><TD>
   
<DIV ALIGN="right">Glitter Graphics</DIV></TD></TR></TABLE>
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14 Feb 2007 22:50:36 IST
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As the electron density is uneven among the carbon atoms,theoritically the double bond is present alternatively. But practically, as this too wouldn't achieve higher stability, the double bond character spreads all over the molecule and now the molecule gets highly stabilized. So benzene is represented with a circle inside a hexagon.
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17 Feb 2007 13:28:11 IST
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Resonance occurs whenever a molecule can be represented by two or more structures differing only in the arrangement of electrons without shifting any atoms. Resonance only involves the delocalization of electrons.It stabilises the molecule.
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Lecturar, Organic Chemistry |
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17 Feb 2007 22:25:17 IST
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due to the presence of both single and double bonds all the bond lengths are not equal....................therefore it is not possible to represent it by one structure.that is why benzene shows resonance
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