A weak bond called a bond results from an attraction between a slightly positive region in a molecule and a slightly negative region in the same or a different molecule.

The weak bond having slightly positive region and a slightly negative region is polar covalent bond.

Explanation:

Covalent bond is defined as the bond which is formed by the sharing of electrons between the atoms. For Example: HCl, etc..

They are of two types:

In this bond, a dipole is created. More electropnegative atom will have a slight negative charge and less electronegative atom will have a slight positive charge. For Example: etc..

Hence, the weak bond having slightly positive region and a slightly negative region is polar covalent bond.

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explanation:

0.07 g/cm³

1.37 g/cm³