Chemistry Nomenclature Practice Test

The IUPAC name for CCl4 is carbon tetrachloride. In this molecule, carbon (C) is the central atom, and it is surrounded by four chlorine (Cl) atoms. The naming follows IUPAC conventions where the prefix indicates the number of atoms of the element present in the compound.

The prefix "tetra-" specifically denotes that there are four chlorine atoms bonded to the carbon atom. Therefore, combining the central element with the prefix for its associated halogens yields "carbon tetrachloride." This systematic approach provides clarity and consistency in naming, allowing chemists to communicate effectively about substances.

In contrast, options such as carbon trichloride and dichloroacetylene do not accurately represent the structure of CCl4. The incorrect alternative of chlorine oxide refers to a compound that does not include carbon, while the naming conventions of these alternatives do not fit the molecule at hand, which is fully accounted by the correct IUPAC name.