How Many Structural Isomers (Also Called Constitutional Isomers) Are There

question 60

Multiple Choice

How many structural isomers (also called constitutional isomers) are there for propylene, and why?

• A) two, because of resonance
• B) two, because of geometrical isomerism
• C) two, because the double bond can be in either one of two locations
• D) none, because the two skeletal structures can be superimposed
• E) none, because double bonds always occur on the right in alkenes

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