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

question 64

Multiple Choice

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

• A)two, because of resonance
• B)two, because of geometrical isomerism and two of the structures can be superimposed
• C)two, because the double bond can be in either one of two locations
• D)three, because of geometrical isomerism and the double bond can be in different locations
• E)three, because of resonance and the double bond can be in different locations

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