The correct option is B; Unequal sharing of electrons among atoms, A polar covalent link is a covalent relationship in which the atoms have uneven electron attraction, resulting in unequal electron sharing.
The distribution of electrons around the molecule in a polar covalent bond, also known as a polar bond, is no longer symmetrical.
The uneven electron sharing results from discrepancies in the electronegativities of the two atoms sharing the electrons. Because of the uneven distribution of electrons, partial charges form.
The larger the dipole, the bigger the difference in electronegativities between the two atoms.
Because of the uneven distribution of electrons among the atoms of different elements, slightly positive (+) and slightly negative (-) charges form in various sections of the molecule.
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