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AP EAMCET2008ChemistryChemical Bonding and Molecular Structure

The bond length of HCl molecule is 1.275 Ã… and its dipole moment is 1.03 D . The ionic character of the molecule (in percent) (charge of the electron =4.8 10⁻¹⁰ esu ) is

Options

  1. A100
  2. B67.3
  3. C33.6
  4. D16.83

Correct answer

D. 16.83

Step-by-step solution

Given, observed dipole moment =1.03 D Bond length of HCl molecule, d=1.275 Ã… =1.275 10⁻⁸ ~cm Charge of electron, e⁻=4.8 10⁻¹⁰ esu Percentage ionic character = ? Theoretical value of dipole moment =e d aligned & =4.8 10⁻¹⁰ 1.275 10⁻⁸ esu - cm & =6.12 10⁻¹⁸ esu - cm & =6.12 D aligned Percentage ionic character aligned & = observed dipole moment theoretical value of dipole moment 100 & = 1.03 6.12 100 & =16.83 % aligned

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