What type of chemical bond is an electrostatic attraction between two oppositely charged ions or a cation and an anion?

An ionic bond is an electrostatic attraction between two oppositely charged ions or a cation and an anion.
A cation is a positively charged ion, and an anion is a negatively charged ion. Ionic bonds form when atoms with very different electronegativities transfer electrons to each other. Electronegativity is a measure of how strongly an atom attracts electrons.
Ionic bonds are very strong and stable. They are responsible for the formation of many ionic compounds, such as sodium chloride (table salt), potassium chloride, and magnesium oxide. Ionic compounds are typically solid at room temperature and have high melting and boiling points.