[tex] \text{CF}_4 [/tex]
Explanation
The IUPAC names binary covalent compounds similar to ionic compounds. The first part of the systematic name "carbon" indicates the component with a partial positive charge- carbon [tex] \text{C} [/tex] in this case. The second part indicates the name of the component with a partial negative charge as if it was an anion. "Fluoride" stands for fluorine [tex] \text{F} [/tex] whereas the prefix "tetra-" indicates that there are four fluorine atoms per molecule. The first species in the IUPAC name- carbon in this case- carries no prefix meaning that only a single carbon atom is present in each carbon tetrafluoride molecule.
Atoms with a partial positive charge shall be placed in front of those with a partial negative charge. Hence write [tex] \text{C} [/tex] and then [tex] \text{F} [/tex]; indicate the number of the atom present in each molecule with a subscript. There are four fluorine atoms in each carbon tetrafluoride molecule- thus write a "4" as the subscript. There shall be no subscript attached to carbon since each carbon tetrafluoride molecule contains only one carbon atom.
