Bonding is the attraction between atoms involving the transfer and sharing of valence electrons to achieve stability and complete its valence shell. With these interactions of molecules formed by bonds, properties of life emerge. Bonds vary in type, each having its own specific properties, effects and strengths. These different types of bonds are: covalent, ionic and hydrogen. A covalent bond is the chemical bond in which the force of attraction between atoms is created by the sharing of electrons, resulting in the formation of molecules of a cell and is classified into two subtypes. , non-polar and polar. While a nonpolar covalent bond involves the equal sharing of electrons, resulting in little or no change in electronegativity, the polar covalent bond shares electrons unequally, resulting in a moderate change in electronegativity. The small or moderate change in electronegativity by covalent bonding forms strong bonds between atoms. To exist, all living organisms needed strong bonds to ensure the stability of their structure. NH, or nitrogen in h...