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 11

Describe the difference between resonance structures and isomers.

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

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

Explain why the carboxylate group (COO^-) is more stable than the alkoxide ion (RO^-) in terms of resonance.

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

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

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

Explain why the nitrite ion (NO₂^-) has two resonance structures.

Which of the following ions does NOT have resonance structures? (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 resonance structures. (2) It is the extra stability a molecule gains due to resonance. (3) It is the energy lost due to resonance. (4) It is the energy of the most stable resonance structure.

Which of the following is a correct statement about the resonance hybrid of ozone (O₃)? (1) It has one single and one double bond. (2) Both O–O bonds are of equal length. (3) It has two single bonds. (4) It has two double bonds.

Which of the following is a correct statement about the resonance structures of benzene? (1) There are two equivalent resonance structures. (2) There are three non-equivalent resonance structures. (3) There is only one resonance structure. (4) Benzene does not have resonance.

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

Fill in the blank: The resonance hybrid is ______ a real structure and can be observed experimentally.

Fill in the blank: The resonance hybrid is ______ in energy than any individual resonance structure.

In the resonance hybrid of benzene, all C–C bond lengths are ______.

True or False: All resonance structures contribute equally to the resonance hybrid.

True or False: Resonance can explain why the C–O bonds in the carbonate ion are all the same length.

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

True or False: Resonance can occur only in molecules with π bonds or lone pairs adjacent to π bonds.