Concept:IUPAC nomenclature treats chlorine atoms as substituents on the parent alkane chain.
Explanation:The formula
CCl4 shows one carbon atom bonded to four chlorine atoms.
The parent hydrocarbon contains a single carbon atom, so its root name is based on methane.
Four chlorine substituents require the prefix "tetrachloro-."
Combining the prefix with the parent name gives "tetrachloromethane."
Option C, carbon tetrachloride, is the old common name rather than the IUPAC name.
Option D, chloroform, refers to
CHCl3, which is a different compound.
Therefore, the correct IUPAC name is tetrachloromethane.
Answer:B. Tetrachloromethane