What is the chemical structure for 4-iodo-1-butyne?

The correct answer, which is the structure of 4-iodo-1-butyne, showcases the specific arrangement of atoms that corresponds with the nomenclature. In this name, "1-butyne" indicates a four-carbon alkane chain with a triple bond starting at the first carbon, while "4-iodo" specifies that an iodine atom is attached to the fourth carbon of that chain.

In the structure represented by the correct answer, there is a clear illustration of a butyne where the triple bond is positioned between the first and second carbons. The iodine atom is then appropriately placed on the fourth carbon, fulfilling the criteria set by the nomenclature.

This structural representation is important because it accurately reflects both the carbon skeleton and the functional group, allowing for proper identification of the molecule. The triple bond and the iodine attachment are correctly depicted, aligning with the naming conventions in organic chemistry. Thus, this structure precisely matches the name "4-iodo-1-butyne."