What is an ionic bond?
An ionic bond is the electrostatic force of attraction between two oppositely charged ions.
E.g., a sodium (
It gains an electron and forms a chloride ion (
These two ions have an ionic bonding that consists of their electrostatic attraction for each other.
The rules of becoming an ion are:
- if an atom has 3 or fewer electrons in its valence shell, it will tend to lose electrons.
- if an atom has 5 or more electrons it its valence shell, it will tend to gain electrons.