Resonance, Chemistry

Assignment Help:

 

Sometimes more than one valence structure is possible and there shows to be no unique assignment. A familiar organic example is in the disposition of single and double C-C bonds in benzene. In the carbonate ion 11) the three structures shown are equivalent by symmetry, and experimentally all three C-O bonds have same length. We describe this situation as resonance between the different structures, and represent it by the double headed arrows shown in 11. The term is misleading as it suggests a fast oscillation between different structures, which certainly does not happen. It is better to think of a wavefunction that is contracted by combining the structures, none of which on their own describe the bonding correctly.

 

 

2244_Untitled.png

                                   11

Resonance may also be appropriate with different valence structures that are not equivalent but look equally plausible, as in nitrous oxide (N2O 12).

 

 

1588_Untitled.png


Related Discussions:- Resonance

Isomerism - organic chemistry, Isomerism - Organic Chemistry Organic su...

Isomerism - Organic Chemistry Organic substance comprising the same molecular reaction but differing from each other at least in some physical or chemical properties or both ar

What is the methyle orange formula?, Methyl orange is a pH indicator often ...

Methyl orange is a pH indicator often used in titrations. It''s chemical formula  is C 14 H 14 N 3 NaO 3 S

Chromatography - purification of organic compounds, Chromatography - Purifi...

Chromatography - Purification of organic compounds This is a modern technique employed for the separation of mixtures into its components, purification of compounds and as well

Determing least energy, Which of the following has the least energy: (1...

Which of the following has the least energy: (1) 2p                    (2)  3p            (3) 2s                             (4) 4d Ans: 2s

Mechanism.., give the mechanism of additin of HCN to acetaldehyde?????

give the mechanism of additin of HCN to acetaldehyde?????

Explain cmr spectrum, Explain CMR spectrum 2,2-Dimethyl-1-propanamine (...

Explain CMR spectrum 2,2-Dimethyl-1-propanamine (neopentylamine, (CH 3 ) 3 CCH 2 NH 2 ) has a maximum of three resonances in its CMR spectrum.  2-Methyl-2-butanamine, CH 3 CH 2

Calculate the flow rates, Low-grade phosphate rock can be upgraded by flota...

Low-grade phosphate rock can be upgraded by flotation processing. In this process the low-grade rock is grounded into a powder and suspended as a water slurry. The addition of smal

Chemical Equilibrium, The equilibrium constant Kp=4 at 1993K for the reacti...

The equilibrium constant Kp=4 at 1993K for the reaction H2+CO2->H2O+CO. INitially H2 and CO2 having 0.8 moles were injected in 5l flask. Find equilibrium concentration of CO2.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd