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

What do you mean by descriptors, Q. What do you mean by Descriptors? De...

Q. What do you mean by Descriptors? Descriptors are selected terms used to describe the sensory attributes of products and vary from one product to the other. The chosen descri

How will you convert ethanoic acid into methanamine?, CH 3 COOH ( ethanoic ...

CH 3 COOH ( ethanoic acid)  + NH 3 ------------ > CH 3 COONH 4   + (HEAT) ---------- > CH 3 CONH 2 (methyleamine) + H 2 O

The lengths of the c-c bonds in isobutene, The lengths of the C-C bonds in ...

The lengths of the C-C bonds in isobutene The lengths of the C-C bonds in isobutene have no significance; two are longer merely to accommodate the rest of the structure. Rememb

MOHRS SALT, write the prepation of mohrs salt..

write the prepation of mohrs salt..

How two amino acids combine to form a dipeptide, Draw a reaction scheme wit...

Draw a reaction scheme with line-bond structures that illustrates how two amino acids combine to form a dipeptide. What conformation does the peptide bond usually adopt?

Thermodynamics, entropy change in mixing ideal gas

entropy change in mixing ideal gas

Bohr model, bohr model for hydrogen atom?

bohr model for hydrogen atom?

Thermodynamic equilibrium constant, Q. For a homogeneous reaction in which ...

Q. For a homogeneous reaction in which the reactants and products are solutes in a solution, write a rigorous relation between the standard molar reaction enthalpy and the temperat

ATOMIC STRUCTURE, CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH ...

CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH OF 2A

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