Question

The bond length of HCl molecule is 1.275 Å and its dipole moment is 1.03 D. The ionic character of the molecule (in per cent) is
(Charge of the electron`=4.8xx10^(-10)` esu)
A. 100
B. 67.3
C. 33.66
D. 16.83

Answer 1

(d) Theoretical value of dipole moment`=exxd`
`=4.8xx10^(-10)xx1.275xx10^(-8)` esu cm
`=6.12xx10^(-18)`esu cm
`=6.12D`
`%`Ionic character
`=(observed dipole moment)/(Theoretical value of dipole moment)xx100`
`=(1.03)/(6.12)xx100=16.83%`