Question

CH₂–C–CH₃O and CH₂–C–CH₃O are

• A. Resonating structures
• B. Tautomers
• C. Geometrical isomers
• D. Optical isomers

Answer 1

The Correct Option is A

The given compounds, CH₂–C–CH₃O and CH₂–C–CH₃O, need to be classified based on their structural relationship. Let's analyze the given options:

1. Resonating Structures: Resonance involves the delocalization of electrons typically represented by bent arrows to illustrate different possible arrangements of \pi-electrons in a molecule. For the compounds given, they can be seen as having different electron arrangements but the same positions of nuclei, indicating they are resonating structures.
2. Tautomers: Tautomerism is a special kind of isomerism, where isomers exist in dynamic equilibrium, often converting between keto and enol forms. The structures given are not in this dynamic equilibrium, supporting that they aren't tautomers.
3. Geometrical Isomers: Geometrical (cis-trans) isomerism occurs due to restricted rotation around double bonds. The given compounds do not involve any double bond with such restricted rotation that would lead to geometrical isomerism.
4. Optical Isomers: Optical isomerism is due to the presence of chirality, where isomers are mirror images but not superimposable. These compounds do not exhibit chirality as they lack a chiral center.

Based on these explanations, the compounds CH₂–C–CH₃O are resonating structures because they represent different electronic arrangements of the same molecular framework without altering the skeletal structure.

Thus, the correct answer is: Resonating structures.