Introduction to Covalent Bonding:
Bonding between non-metals consists of two electrons shared
between two atoms. In covalent bonding, the two electrons shared
by the atoms are attracted to the nucleus of both atoms. Neither
atom completely loses or gains electrons as in ionic bonding.
There are two types of covalent bonding:
1. Non-polar bonding with an equal sharing of electrons.
2. Polar bonding with an unequal sharing of electrons. The
number of shared electrons depends on the number of electrons
needed to complete the octet.