Key Concepts - Chapter 2

Atoms differ in their tendency to gain electrons. Electronegativity is a measure of this tendency. Atoms with great differences in electronegativity tend to form ionic bonds; those with similar electronegativity tend to form covalent bonds.

Atoms differ in their tendency to gain electrons. Electronegativity is a measure of this tendency. Atoms with great differences in electronegativity tend to form ionic bonds; those with similar electronegativity tend to form covalent bonds.