Question

A diatomic molecule has a dipole moment equal to 1.2 D. If the bond length is 1 $A^0$, what fraction of electronic charge ${}^{\prime }{e}^{\prime }$ exists on each atom.

Answer 1

Electronic charge $=$ $\frac{Dipole-moment}{Bond-length}$

$=\frac{1.2\times {10}^{-18}}{1\times {10}^{-8}}$

$=1.2\times {10}^{-10}esu$

Thus, fraction of elctronic charge on each end $=\frac{1.2\times {10}^{-10}}{4.8\times {10}^{-10}}=0.25$

$=25$% of $e$