Resonance Structures

Chemistry ⇒ Chemical Bonding and Structure

Resonance Structures starts at 11 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Resonance Structures. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.

See sample questions for grade 12

Describe the difference between resonance and isomerism.

Describe the effect of resonance on the acidity of carboxylic acids.

Describe the effect of resonance on the bond length in the carbonate ion (CO₃^2-).

Explain why the amide ion (NH₂^-) does not exhibit resonance.

Explain why the bond order in ozone (O₃) is 1.5.

Explain why the cyanate ion (OCN^-) has three resonance structures.

Explain why the formate ion (HCOO^-) exhibits resonance.

Explain why the nitrate ion (NO₃^-) has three equivalent resonance structures.

Which of the following ions does NOT exhibit resonance? (1) NO₂^- (2) SO₄^2- (3) NH₄⁺ (4) CO₃^2-

Which of the following is a correct statement about resonance energy? (1) It is the energy required to form a resonance hybrid. (2) It is the difference in energy between the resonance hybrid and the most stable resonance structure. (3) It is the energy released when a molecule resonates. (4) It is the energy of the least stable resonance structure.

Which of the following is a correct statement about resonance hybrid? (1) It is less stable than any individual resonance structure. (2) It has properties intermediate between the contributing structures. (3) It is a rapidly oscillating structure. (4) It is identical to one of the resonance forms.

Which of the following is a correct statement about the resonance in benzene? (1) Benzene has alternating single and double bonds. (2) All C–C bonds in benzene are of equal length. (3) Benzene has only one resonance structure. (4) Benzene has localized π electrons.

Fill in the blank: In resonance structures, the positions of ______ remain unchanged.

Fill in the blank: Resonance structures are connected by ______ arrows in Lewis structures.

Fill in the blank: The more resonance structures a molecule has, the ______ its resonance stabilization energy.

Fill in the blank: The resonance hybrid of a molecule is ______ in energy than any of its individual resonance structures.

True or False: Resonance can occur in both neutral molecules and ions.

True or False: Resonance can only occur in planar molecules.

True or False: Resonance increases the stability of a molecule or ion.

True or False: Resonance structures can have different formal charges on atoms.