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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.
â¢âMolecules polarity is due to the sum of all individual bond polaries and loneâpair contribuon in the molecule. â¢âPolarity has a dramac eï¬ect on the physical properes of molecules, parcularly on melng points, boiling points, and solubility.