Question

What are the two important types of chemical bond?

Answer 1

1. Ionic Chemical Bond

2. Covalent Chemical Bond

Ionic bonds are formed between two compounds when one of the atoms donates electron(s) to the other. Both the atoms complete their octet by donating and receiving electrons simultaneously.
Example - NaCl, etc

Covalent bond is formed when atoms share their electrons to mutually complete their own octets. The shared pair of electrons belong to both the atoms contributing.
Example - methane, benzene etc.