Question

which formula is an ionic compound?
co₂
no₂
n₂
naf

Explanation:

Ionic compounds are formed by the transfer of electrons between a metal and a non - metal. Sodium (Na) is a metal and fluorine (F) is a non - metal. In NaF, sodium donates an electron to fluorine to form an ionic bond. CO₂, NO₂ are covalent compounds formed by the sharing of electrons between non - metals. N₂ is a diatomic molecule of a non - metal and is not an ionic compound.

Answer:

NaF