In a polar molecule, the ionic charge is 4.8×10-10 e.s.u. If the inter ionic distance is 1 Å unit, then the dipole moment is

Given ionic charge = 4.8×10-10 e.s.u. and ionic distance =1Ao=10-8 cm. We know that dipole moment = Ionic charge × ionic distances. u. per cm  =4.8 debye.