Answer
CH$_{4}$, CCl$_{4}$, ICl, and NF$_{3}$ are likely to be molecular compounds.
NaBr, BaF$_{2}$, and CsCl are likely to be ionic compounds.
Work Step by Step
CH$_{4}$, CCl$_{4}$, ICl, and NF$_{3}$ are likely to be molecular compounds because they are compounds between two nonmetal elements. Nonmetal elements usually don't transfer electrons to one another; usually, the electrons are shared between the atoms.
NaBr, BaF$_{2}$, and CsCl are likely to be ionic compounds because they involve bonds between a metal and nonmetal. Metals usually are electron donors and nonmetals are usually electron acceptors; therefore, metals form cations and nonmetals form anions. It is this attraction between positive and negative charges that forms ionic bonds.
