Question

Dipole moment of HX is 2.59 × 10⁻³⁰ coulomb-metre. Bond length of HX is 1.39 Å. The ionic character of molecule is ______%.

Options

• 8

• 9

• 10

• 11.65

Answer 1

Dipole moment of HX is 2.59 × 10⁻³⁰ coulomb-metre. Bond length of HX is 1.39 Å. The ionic character of molecule is 11.65%.

Explanation:

μ_cal. = e × d

= 1.6 × 10^–19 C × 1.39 × 10^–10 m

μ_cal. = 2.22 × 10^–29 coulomb-metre

% ionic character in HX = `μ_"obs."/μ_"cal." xx 100`

= `(2.59 xx 10^-30)/(2.22 xx 10^-29) xx 100`

= 11.65%