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प्रश्न
Assertion (A): Energy of resonance hybrid is equal to the average of energies of all canonical forms.
Reason (R): Resonance hybrid cannot be presented by a single structure.
पर्याय
Both A and R are correct and R is the correct explanation of A.
Both A and R are correct but R is not the correct explanation of A.
Both A and R are not correct.
A is not correct but R is correct.
उत्तर
A is not correct but R is correct.
Explanation:
This is because canonical structures always have more energy than the resonance hybrid. Resonance hybrids are always found to be more stable than any of the canonical structures since the delocalization of electrons lowers the orbitals energy and gives stability.
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संबंधित प्रश्न
Draw the resonance structure for the following compound. Show the electron shift using curved-arrow notation.
C6H5OH
Draw the resonance structure for the following compound. Show the electron shift using curved-arrow notation.
\[\ce{C6H5 - \overset{+}{C}H2}\]
Draw the resonance structure for the following compound. Show the electron shift using curved-arrow notation.
\[\ce{CH3CH = CH\overset{+}{C}H2}\]
In which of the following representations given below spatial arrangement of group/ atom different from that given in structure ‘A’?
 |
| (A) |
| (i) |  |
| (ii) |  |
| (iii) |  |
| (iv) |  |
What is the hybridisation of each carbon in H2C = C = CH2.
Draw the resonance structure of the following compounds;
Draw the resonance structure of the following compounds;
CH2 = CH – CH = CH2
Draw the resonance structure of the following compounds;
\[\begin{array}{cc}
\ce{CH2 = CH - C = O}\\
\phantom{.........}|\\
\phantom{.........}\ce{H}
\end{array}\]
Resonance structures of propenal are given below. Which of these resonating structures is more stable? Give reason for your answer.
\[\ce{\underset{I}{CH2 = CH - CH = O} <-> \underset{II}{\overset{⊕}{C}H2 - CH = CH - \overset{Θ}{O}}}\]
Which of the two structures (A) and (B) given below is more stabilised by resonance? Explain.
\[\ce{\underset{(A)}{CH3COOH}}\] and \[\ce{\underset{(B)}{CH3CO\overset{Θ}{O}}}\]
