Questions
Consider the following statements.
I. The canonical forms have no real existence.
II. The molecule does not exist for a certain fraction of time in one canonical form and for other fractions of time in other canonical forms.
III. There is no such equilibrium between the canonical forms as we have between tautomeric forms (keto and enol) in tautomerism.
IV. The molecule such as has a single structure which is the resonance hybrid of the canonical forms and which cannot such as be depicted by a single Lewis structure.
Which of the above statements are correct?
detailed solution
Correct option is D
Many misconceptions are associated with resonance and the same need to be dispelled.You should remember that(i) The canonical forms have no real existence.(ii) The molecule does not exist for a certain fraction of time in one canonical form and for other fractions of time in other canonical forms.(iii) There is no such equilibrium between the canonical forms as we have between tautomeric forms (keto and enol ) in tautomerism(iv) The molecule such as has a single structure which is the resonance hybrid of the canonical forms and which cannot such as be depicted by a single Lewis structure.Similar Questions
Resonance stabilises the molecule as the energy of the resonance hybrid is
Get your all doubts cleared from
Sri Chaitanya experts
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests