MCQ
If $H-X$ bond length is $2\,\mathop A\limits^o $ and $H-X$ has dipole moment $5.12 \times 10^{-30}\,C-m$, the $\%$ of covalent character of molecule is ............. $\%$
- A$10$
- B$16$
- C$18$
- ✓$84$
✓
Answer
Correct option: D.
$84$
d
$\mu_{\mathrm{Cal}}=2 \times 10^{-10}\, \mathrm{m} \times 1.6 \times 10^{-19} \,\mathrm{C}$
$\mu_{\mathrm{Cal}}=2 \times 10^{-10}\, \mathrm{m} \times 1.6 \times 10^{-19} \,\mathrm{C}$
$=3.2 \times 10^{-29}\, \mathrm{C}-\mathrm{m}$
$\%$ ionic character
$=\frac{\mu_{\mathrm{exp}}}{\mu_{\mathrm{Cal}}} \times 100=\frac{5.12 \times 10^{-29}}{3.2 \times 10^{-29}} \times 100=16 \%$
$\%$ Cov. character $=100-\%$ of ionic character
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