Formation of Positive Ion
- Usually, the atom of metals consists of 1, 2 or 3 valence electrons.
- In order to achieve octet electrons arrangement, the atoms will release the valence electrons.
- After releasing the valence electrons, the protons in the nucleus will outnumber the electrons. As a result, positive ions formed.
Example: Formation of Ion with +1 Charge
 |
| (A sodium atom release one electron to form a sodium ion with +1 charge) |
Example: Formation of Ion with +2 Charge
 |
| (A magnesium atom release one electron to form a sodium ion with +2 charge) |
Example: Formation of Ion with +3 Charge
 |
| (An aluminium atom release one electron to form a sodium ion with +3 charge) |