Question

What do polar covalent bonds result from?

Answer 1

As we know that a covalent bond is a chemical bond in chemistry which involves the sharing of pairs of electrons between atoms. The stable balance of interactive forces atoms while they share electrons is called covalent bonding. This covalent bonding can be of 2 types that is polar covalent bonding and nonpolar covalent bonding.

Complete answer:
Let us discuss about covalent bonds followed by the explanation of how polar covalent bonds are actually formed:-
-Covalent bonds: It is a chemical bond in chemistry which involves the sharing of pairs of electrons between atoms. These pairs of electrons are referred to as shared pairs or bonding pairs. The stable balance of interactive forces (i.e., attractive and repulsive forces) between atoms while they share electrons is called covalent bonding. This covalent bonding can be of 2 types that is polar covalent bonding and nonpolar covalent bonding.
-Formation of polar covalent bonds:-
A polar bond is a category of a covalent bond that is usually formed between two nonmetal atoms having different electronegativities. We can also define it more accurately as a bond which exists between two atoms consisting of electrons that are unevenly distributed among them. Due to this state, there is some electrical dipole moment in the molecules wherein the two ends are either slightly positive or negative.
Here electronegativity plays a major role in determining the different types of covalent bonds as more the electronegativity difference; more polar will be the covalent bond.
So we can say that polar covalent bonds are the result of electronegativity difference between the atoms.

Note:
-Remember that “electronegativity is the tendency of an atom to attract a shared pair of an electron towards itself”.
-Also every covalent bond between atoms of different elements is a polar bond, but the degree of polarity can vary widely. Some bonds seem to be only minimally polarized, while others are strongly polarized.