The calculated dipole moment is charge on electron radius of molecule. View solution The dipole moment of HBr is 2. Therefore to determine the percent ionic character of hydrogen fluoride the measured value of 118 D is divided by 441 D which gives a percent ionic character of 41.
For a given bond the percent ionic character is given simply by Here I is the percent ionic character m obs is the actual observed or in the case of bond dipole moments calculated dipole moment and m ionic is the dipole moment which would occur if the bond were 100 ionic.
The equation used for several previous questions like this on YA is ionic character 1-exp -025 chA- chB100 where chA is the electronegativity of element A etc. The percentage of ionic character in a compound having some covalent character can be calculated by the following equation. For a given bond the percent ionic character is given simply by Here I is the percent ionic character m obs is the actual observed or in the case of bond dipole moments calculated dipole moment and m ionic is the dipole moment which would occur if the bond were 100 ionic. Best answer Every ionic compound have some percentage of covalent character according to Fajans rule.