Final answer:
Among the given compounds, Na₃N is the ionic compound, as it is composed of a metal (sodium) and a nonmetal (nitrogen), which form positive and negative ions that bond together. The other compounds, P₂O₅, NF₃, and C₄H₁₀, are covalent compounds where atoms share electrons.
Step-by-step explanation:
The question is asking which of the four compounds is an ionic compound. Ionic compounds are generally formed between metals and nonmetals, where electrons are transferred from the metal to the nonmetal. The charges of the resulting positive and negative ions hold the compound together. In the given list, Na₃N is the ionic compound. Sodium (Na) is a metal that donates electrons to nitrogen (N), which is a nonmetal, forming Na+ and N3- ions that bond together to create the compound.
The other compounds, P₂O₅, NF₃, and C₄H₁₀, are covalent compounds. In covalent compounds, atoms share electrons rather than transfer them. P₂O₅ is diphosphorus pentoxide, NF₃ is nitrogen trifluoride, and C₄H₁₀ is butane. These compounds consist of nonmetals that share electrons to form stable molecules.