To determine the correct name for the given organic compound, let's follow these steps:
1. Identify the longest carbon chain containing the double or triple bond:
- The given compound has four carbon atoms in a straight chain.
2. Identify the type of bond:
- The structure shows a triple bond (≡) between the second and third carbon atoms.
3. Number the carbon chain:
- Number the carbon atoms in such a way that the triple bond gets the lowest possible number.
- If we start numbering from the left:
1. H-C≡C-C-C-H
1 2 3 4
4. Assign the locant for the triple bond:
- The triple bond is between carbon 2 and carbon 3.
5. Determine the name based on the chain length and bond type:
- The compound has a four-carbon chain: "butane"
- It contains a triple bond: "butyne"
- The triple bond is at carbon 2: "2-butyne"
Therefore, the correct name for the given organic compound is 2-butyne, which corresponds to option A.
Answer: 2-butyne (Option A)
