Final answer:
The unequal sharing of electrons leading to a molecule with a small electrical charge on opposite ends is known as polar bonding specifically polar covalent bond.
Step-by-step explanation:
The unequal, asymmetric sharing of electrons that results in one end (pole) of the molecule having a small electrical charge opposite the other end is called polar bonding. Specifically, when the electrons are shared unequally between two atoms in a bond, it is referred to as a polar covalent bond. this type of bond forms between two atoms of differing electronegativities resulting in a part of the molecule having a slight positive charge while another part has a slight negative charge.
An example of this can be observed in a water molecule, where the oxygen atom has a slight negative charge because the shared electrons spend more time closer to the oxygen nucleus than to the hydrogen nuclei, which in turn have a slight positive charge.