Ion - atom or molecule which has lost or gained electrons to beome charged.
In an ionic bond, atoms lose or gain electrons to form charged particles (ions) which are then strongly attracted to each other because of the attraction of opposite charges + and -.
Metal and non-metal of opposite charges have an electrostatic attraction.
All the atoms on the left-hand side of the periodic table such as sodium and magnesium have only one or two electrons in their outer shell so they are willing to remove it, to get a full outer shell and be stable
If they get rid of those extra electrons, they become positively charged.
Ions are reactive and will then attract strongly to another ion with the opposite charge.
Groups 6 and 7 such as oxygen and chlorine have nearly full…