Question

What is a polarised bond?

Answer 1

Hint:The polarity of a molecule or atom arises when the electrons of the atom gets accumulated at the same corner of the atom somehow, and creates a partial negative charge.
-Consequently the other corner of the atom would create a partial positive charge. This charge difference results in electrostatic forces which are attractive in nature.

Complete step-by-step answer:In the field of chemistry, the polarised bond or the bond polarity could be defined as the division with respect to the electric charge which is present around the bond. This charge division leads to formation of an electric dipole in the molecule or the substituents present in a molecule. Sometimes, the electrons present in the molecule get distributed unevenly across the molecule or the two atoms which are forming the bond together.
Polarization of a bond refers to the difference of the positive and negative charge created in an atom which results in the formation of a bond, most of the time. This polarisation may occur because of the electrons being accumulated on one side of the atom which results in formation of partial negative charge on that side and the other side develops a partial positive charge. If this polarizing power of an atom is very high, then the atom would pull the electrons of the other atom completely and it will result in the formation of negative charge on the atom which pulled and accepted the electron and a positive charge on the atom which gave the electrons. This type of bond is called ionic bond.

Note:When the polarity of the bond is low they create a partial positive and negative charge which gives rise to polar bonds. However if the polarity is very high, it results in gain or loss of electrons which creates an ionic bond between the particles.
And if the electronegativity of two atoms are same, then it results in a covalent bond or sharing of electrons takes place.