Assertion (A) : Energy of resonance hybrid is equal to the average of energiesof all canonical forms.Reason (R) : Resonance hybrid cannot be presented by a single structure
Question
Assertion (A) : Energy of resonance hybrid is equal to the average of energiesof all canonical forms.Reason (R) : Resonance hybrid cannot be presented by a single structure
Solution
Assertion (A) is incorrect while Reason (R) is correct.
The energy of a resonance hybrid is not equal to the average of the energies of all canonical forms. Instead, it is lower than the energy of any individual canonical structure. This is because the resonance hybrid represents the most stable structure, and stability is associated with lower energy.
Reason (R) is correct. A resonance hybrid cannot be represented by a single structure because it is a composite of multiple resonance structures or canonical forms. These forms are used to represent the delocalization of electrons within certain molecules and polyatomic ions. The actual structure is an average of these forms, hence the term 'hybrid'.
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solved problem in Adaptive Resonance Theory
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