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DNA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule. Thus, it is a POLAR molecule which allows it to interact in an aqueous environment.NA is a polar molecule because it has a negatively (-) charged phosphate group attached to the 5' end of the molecule and a negatively charge hydroxl group (OH) attached to t â¦ he 3' prime end of the molecule.
Polarity in a molecule can refer to its electric charge either positive or negative. Polarity is a physical property of a compound or substance which relates to other physical properties like melting point, boiling point, solubility and intermolecular interactions between molecules. he polarity of the molecule is the sum total of all the polar bonds in the molecule. A molecule has one or more chemical bonds between orbital of different atoms.