Which pair of atoms forms ionic bonds?

metal and metal

metal and nonmetal

nonmetal and nonmetal

nonmetal and noble gas

Answer: B

Explanation:

An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal. A covalent bond involves a pair of electrons being shared between atoms.