The IUPAC name of ${CH}_{3} - {CH}_{2} - C \equiv C - {CH}_{3}$ is _____________

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Pent-3-yne

Pentane

Pent-2-ene

Pent-2-yne

answer is D.

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Detailed Solution

${CH}_{3} - {CH}_{2} - C \equiv C - {CH}_{3}$

Word root: Pent (as the longest chain consists of 5 carbon atoms)
Suffix: -yne (The compound belongs to the alkyne family as a triple bond is present)
Prefix: 2 (The triple bond is present between the 2nd and 3rd carbon and the number of lowest carbon is taken)
IUPAC name: Pent-2-yne

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