Given, observed dipole moment =1.03D Bond length of HCl molecule, d=1.275Å =1.275×10−8cm Charge of electron, e−=4.8×10−10 esu Percentage ionic character = ? Theoretical value of dipole moment =e×d =4.8×10−10×1.275×10−8esu−cm =6.12×10−18esu−cm =6.12D Percentage ionic character =