Molecule forms by the combination of two atoms of elements, the attraction force operate between atoms is known asChemical Bonding. Chemical bonds are formed due to presence of valence electrons in atoms which present in outermost shell of atom.
Question: Why chemical bonds are formed between atoms?
Answer: Chemical bonds are formed between atoms to achieve stable state like inert or noble gases.
Atoms achieve stable state of nearest inert gas with complete octet in two ways:
1. By exchanging electron with any other atom.
2. By sharing electron with any other atom.