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Classify cycloalkanes by size and ring s...

Classify cycloalkanes by size and ring strain.

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i. Small rings `(C_(3) - C_(4))` have large strain.
ii. Common rings `(C_(5) - C_(6))` have little or no strain.
iii. Medium rings `(C_(7) - C_(12))` have little strain.
iv. Large rings `(gt C_(12))` are strain free.
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