What is the name of this covalent compound? cf4

This compound contains these two nonmetal elements: carbon (C) and fluorine (F). Since this compound only contains two types of nonmetal elements, we will be using Type 3 naming (for binary compounds).

In type 3 naming we use prefixes for the second element named (in this case, fluorine) and the first element (carbon) is just left alone.
So, since we have four fluorine atoms, the prefix will be "tetra." Also, we turn the "ine" in fluorine into "ide"

So here is the name: carbon tetrafluoride.

(Note that carbon tetrafluoride is also known as: tetrafluoromethane)