Question

A diatomic molecule has a dipole moment of $2D$, if the bond distance is $1^{o}A$, then the percentage of electronic charge existing on each atom is:

• A. $41.67\%$
• B. $29\%$
• C. $19\%$
• D. $12\%$

Answer 1

Answer: (A)

$41.67\%$

DIpole moment $=$ Electronic charge $\times$ bond length

$\mu =e\times d$

One debye $={10}^{-18}$ esu centimeter

$e=\frac{\mu }{d}=\frac{2\times {10}^{-18}esucm}{1\times {10}^{-8}cm}=2\times {10}^{-10}esu$

Charge of an electron $=4.8\times {10}^{-10}$ esu.

Percentage of electronic charge $=\frac{2\times {10}^{-10}}{4.8\times {10}^{-10}}\times 100=41.67\%.$

Option A is correct.