What is an ionic bond?

They typically crystallize: Because of the three-dimensional structure of the ionic bond, they prefer brittle crystallization networks.

High boiling and melting points (300º C to 1000ºC): Since there is a very strong gravitational force between the ions, they must be exposed to a high melting or boiling point to change their state.

Solids at a temperature of 20ºC to 30ºC: Consequently, the ionic bond is usually solid at room temperature.

Good electrical conductors: Ionic bonds are good conductors of electric current as long as they are dissolved in water.

How ionic bonding is formed
When a metallic and a non-metallic element combine, they seek electronic stability. The metal is ready to transfer a valence electron from its outer shell, while the non-metal is ready to receive this electron from its outer shell.
When a metal element conducts its electron, it acquires a positive charge, i.e., it turns into a cation (positive ion). In turn, it has a negative charge when it receives a non-metallic electron and thus becomes an anion (negative ion).
The positive and negative charges of the ions immediately create an attractive force that binds them. Thus, the ionic bond is combined.
The process of forming an ionic bond
For example , sodium (Na) has one valence electron in the last electron shell, while chlorine (Cl) has seven. When sodium and chlorine combine, sodium gives its electron to chlorine. This then adds 8 valence electrons.
When sodium loses its electron, it acquires a positive charge and turns into a cation. When chlorine has an electron, it turns negative and turns into an anion.
As the positive and negative charges attract each other, both ions combine to form an ionic bond. This compound, formed by ionic bonding, is the chemical name for sodium chloride (NaCl), a common salt.
An example of the process of ionic bonding of sodium chloride (salt).
See also Ion