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  4. A diatomic molecule has a dipole moment of 1.2 D. If the bond distance is 1.0 mathringA, fraction of an electronic charge on each atom is

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Q. A diatomic molecule has a dipole moment of $1.2 D$. If the bond distance is $1.0 \mathring{A}$, fraction of an electronic charge on each atom is

Chemical Bonding and Molecular Structure

Solution:

$\mu=e \times l $
$e=\frac{\mu}{l}=\frac{1.2 D }{1.0 \mathring{A}}=\frac{1.2 \times 10^{-18} esu cm }{1.0 \times 10^{-8} cm } $
$=1.2 \times 10^{-10} esu$
Charge on electron $=4.8 \times 10^{-10}$ esu
Thus, fraction of charge $=\frac{1.2 \times 10^{-10}}{4.8 \times 10^{-10}}=0.25$