Compounds are formed when the atoms of two or more elements are chemically combined.

What type of bond is formed if atoms donate electrons to other atoms when the elements are combined?

A. ionic bond

B. hydrogen bond

C. covalent bond

Fully donating an electron results in an ionic bond, so A is the correct answer.

In comparison, B, a hydrogen bond, is a bond that forms between an H in one compound and an O, N, or F in another. It is among the strongest of intermolecular forces, while ionic/covalent bonds are intramolecular.

C, a covalent bond, is a bond that forms when atoms share electrons instead of donating them.