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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.
11
Resonance may also be appropriate with different valence structures that are not equivalent but look equally plausible, as in nitrous oxide (N2O 12).
Magnetic property of d block elements
potential sources of error associated with coulometric titrations
To calculate the e.m.f of the cell when does the nelsons equation is use? Ans) The Nernst equation is useful to measure the e.m.f of the cell when the concentrations of solution
give one book name about electromatric effect?&author name?
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Q. Explain the structure of Alkenes? Ans. Alkenes have the general formula C n H 2n . Therefore, for every n carbon atoms, there are 2n hydrogen atoms. Alkenes have C =
The transition metal complexes are known to be paramagnetic in character. CFT helps us to understand the magnetic properties in terms of magnetic susceptibility measurements. The m
give an example of a compound whose empirical formula & molecular formula are same.
NON-ELECTROLYTE SOLUTIONS Composition: A solution is a mixture of two or more substance; this consists of one or more minority substances, the solute(s), dispersed in a ma
process of metellergy
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