Foundation
Chemistry Foundation
Important Compounds of Carbon
Question
Which of the following statements is not true ?
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Solution
In IUPAC naming, alkenes (with C=C double bonds) use suffix "-ene" and alkynes (with C≡C triple bonds) use "-yne". The key rule is: double/triple bonds get priority for lower numbers over substituents. The false statement is "The substituents get lower number in comparison to double bond" – actually, the double bond gets lower numbering priority.
Final answer: The substituents get lower number in comparison to double bond.