Learning Path
Question & Answer
Choose the Best Answer
Cyclohexane
Cyclobutane
Cyclopentane
Cycloheptane
Understanding the Answer
Let's break down why this is correct
Cyclohexane can fold into a chair shape, which spreads strain and keeps the ring stable. Other options are incorrect because Some think the small 4‑member ring is easier to keep straight, but cyclobutane is highly strained, like a paper clip that is bent too much; Cyclopentane is flexible, but its 5‑member ring does not form a rigid, low‑energy chair like cyclohexane.
Key Concepts
Cycloalkanes Naming
medium level question
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Deep Dive: Cycloalkanes Naming
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Definition
Naming cycloalkanes involves adding the prefix 'cyclo-' before the root name, numbering carbons to give substituents the lowest possible numbers, and alphabetically ordering substituents. The naming also includes using prefixes like cis- and trans- based on the orientation of substituents on the ring, with cyclopentanes and cyclohexanes being the most common due to their stability and low ring strain.
Topic Definition
Naming cycloalkanes involves adding the prefix 'cyclo-' before the root name, numbering carbons to give substituents the lowest possible numbers, and alphabetically ordering substituents. The naming also includes using prefixes like cis- and trans- based on the orientation of substituents on the ring, with cyclopentanes and cyclohexanes being the most common due to their stability and low ring strain.
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