Question

What are some nonpolar covalent bond examples in living things?

Answer 1

Hint : The existence of a hundred percent ionic or covalent bond represents an ideal situation. In reality, no bond or a compound is either completely covalent or ionic. Even in the case of a covalent bond between two hydrogen atoms, there is some ionic character.

Complete Step By Step Answer:
Covalent bonds are common in the molecules of living organisms. These bonds are created by sharing electrons. The more electrons they share the stronger the bond will be.
Non-polar covalent bonds appear between two atoms of the same element or between different elements that equally share electrons.
The resultant covalent bond is a polar covalent bond. As a result of polarization, the molecule possesses the dipole moment, which can be defined as the product of the magnitude of the charge and the distance between the centers of positive and negative charge. It is usually designated by the Greek letter ‘’and expressed as follows:
$Dipole\text{ }moment\text{ }\left( \mu \right)\text{ }=\text{ }Charge\text{ }\left( Q \right)\text{ }\times \text{ }distance\text{ }of\text{ }separation\text{ }\left( r \right)$
When a covalent bond is formed between two similar atoms, for example in ${{H}_{2}},{{O}_{2}},C{{l}_{2}}$ the shared pair of electrons equally attracted by the two atoms. The bond so formed is called a nonpolar covalent bond. In the case of heteronuclear molecule HF, the shared electron pair between the two atoms get displaced more towards F is far greater than $H.$

Note :
Note that in the case of polyatomic molecules, the dipole moment not only depends upon the individual dipole moments of a bond is known as bond dipoles but also on the spatial arrangement of various bonds in the molecule.