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

Requirements for the evaluation process, Q. Requirements for the evaluation...

Q. Requirements for the evaluation process? Some of the requirements to be kept in mind for the evaluation of the products are listed herewith: • People in a sensory test a

Chemical properties of alkyl halides, Chemical Properties of Alkyl Halides ...

Chemical Properties of Alkyl Halides The alkyl halides are very reactive; the sequence of reactivity is as follow:             Iodide > Bromide > Chloride (Nature of the hal

Rubber, deffination and example

deffination and example

Soda lime glass and safety glasses, Q.   Write an account of soda lime glas...

Q.   Write an account of soda lime glass and safety glasses. Ans. Soda-Lime Glass or soft glass: It is the ordinary glass in which Na 2 O is added to the melt to oxide on hea

Gas laws , what is the volume of a gas when the temperature is raised to 25...

what is the volume of a gas when the temperature is raised to 25 degrees celcius fro STP?

Aromatic compound, Aromatic compounds benzoic and non benzoind

Aromatic compounds benzoic and non benzoind

How do we measure food texture, Q. How do we measure food texture? Foo...

Q. How do we measure food texture? Food texture can be evaluated by mechanical test or instrumental methods. This is called as objective evaluation. When we use the human sens

Types of spectrometers, Types of spectrometers: The two types of spect...

Types of spectrometers: The two types of spectrometers for ICP-AES are: sequential spectrometers and simultaneous spectrometers. Those have the capabilities of measuring the v

Proteins, determination of proteins in flour sample

determination of proteins in flour sample

Latice energy, Factors effecting lattice energy of ionic compound

Factors effecting lattice energy of ionic compound

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