Question

THE PERCENTAGE OF IONIC CHARACTER OF A COMPOUND HAVING 1.2d DIPOLE MOMENT AND 125 PM BOND LENGTH IS [ANS:20 PERCENT}

Answer 1

Formula used :

μ = e × d

For complete separation of unit charge (100% ionic character) the dipole moment calculated as:

μ = 1.602 × 10 coulomb × 1.275 × 10 m

= 2.04 C m

Actual dipole moment of HCl = 1.03 D = 0.34 x 10 C m (1 C m = 2.9979×10  D.)

 %  ionic character of HCl = Actual dipole moment/calculated dipole moment  100 =

0.34 x 10 C m / 2.04 × 10  C m  100 = 17%