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A constitutional isomer of a substance is a molecule which as the same molecular formula but a different spatial arrangement of the atoms. The formula for cyclopropane is:

C₃H₆

The constitutional isomer for cyclopropane is propene, which has the structure:

H₂C=CH-CH₃
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CH₂ = CH - CH₃ or H₂C = CH - CH₃

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Further explanation

Cycloalkanes

  • Carbon atoms in alkanes can be attached in a ring formation (or cyclic) and such compounds are called cycloalkanes.
  • The general formula of cycloalkanes is [tex]\boxed{ \ C_nH_{2n} \ }.[/tex]
  • Cycloalkanes are named by adding the prefix cyclo - to the names of alkanes. In our case, the cycloalkane with three carbon atoms is called cyclopropane.

Alkenes

  • Alkenes are unsaturated hydrocarbon whose structure contains only one double bond [tex]\boxed{ \ C=C \ }[/tex].  
  • A double bond is formed because the carbon atoms do not bond t enough hydrogen atoms to complete their octet. That's why they are described as unsaturated.
  • The general formula of alkenes is [tex]\boxed{ \ C_nH_{2n} \ }.[/tex]

Isomerism

  • Isomers are different compounds that have the same molecular formula. The atoms are just arranged in a different order.
  • Both alkenes and cycloalkanes have the same general formula. Therefore every cycloalkane, except C₂H₄, has an alkene isomer.
  • The only constitutional isomer of cyclopropane is propene.

Learn more

  1. The chemical formula for nitrobenzene  https://brainly.com/question/2861241
  2. Carbon atoms can form four covalent bonds https://brainly.com/question/3064597
  3. About the solution as a homogeneous mixture brainly.com/question/637791

Keywords: draw, the structure, the only constitutional isomer of cyclopropane, propene, cycloalkanes, alkenes, ring formation, double bond, CnH2n

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