$\begin{align}  & {{q}_{1}}=2\mu C\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,q=ne\Rightarrow {{n}_{1}}=\frac{4\times {{10}^{-6}}}{1/6\times {{10}^{-19}}}=\frac{1}{4}\times {{10}^{14}}=2/5\times {{10}^{13}} \\  & {{n}_{2}}=2/5\times {{10}^{13}} \\ \end{align}$ مجموع الکترون‌های مبادله شده: ${{n}_{1}}+{{n}_{2}}=2/5\times {{10}^{13}}+2/5\times {{10}^{13}}=5\times {{10}^{13}}$