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

Dyes - chemistry in action, Dyes Dye is a synthetic and natural colouri...

Dyes Dye is a synthetic and natural colouring matter that is employed in solution to stain materials particularly fabrics. All the coloured substances are not dyes. A coloured

Calculate the mass of sodium chloride, Calculate the mass of sodium chlorid...

Calculate the mass of sodium chloride: Problem: Let us calculate the mass of sodium chloride in a solution containing 24 Na (half-life, 15 h) whose activity is 5.7 mCi

Simple distillation, n-propyl acetate evaporates rapidly when exposed to ai...

n-propyl acetate evaporates rapidly when exposed to air,but water does not.Explain

Honey, fiehes test means result if positive result always color change if n...

fiehes test means result if positive result always color change if negative color change or not

Making a model hydraulic elevator, Making a model hydraulic elevator So...

Making a model hydraulic elevator Some freight and passenger elevators are increased by water pressure. You can make a model of one of these with an automobile hand pump. Conne

Uses of esters - carboxylic acids, Uses of Esters (a) Esters are used a...

Uses of Esters (a) Esters are used as a solvent for oils, fats, cellulose, resins etc. (b) Esters are used in making artificial flavours and essences. (c) Esters are used

The nature of chemical bonding, What is the nature of chemical bonding betw...

What is the nature of chemical bonding between  Cs and F: (1) Covalent (2) Ionic (3) Coordinate (4) Metallic Ans: Ionic

Find the net flux of the uniform electric field, What is the net flux of th...

What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?

How many fluorescence photons will really be detected, How many fluorescenc...

How many fluorescence photons will really be detected on average by the photo detector during a 10 ms acquisition window if one diIC12 molecule is located in the illuminated area?

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