Semiconductor Electronics

A specimen of silicon is to be made \(P\)-type semiconductor for this one atom of indium, on an average, is doped in \(5 \times 10^7\) silicon atoms. If the number density of silicon is \(5 \times 10^{22}\) atom/\(\mathrm{m}^3\) then the number of acceptor atoms per \(\mathrm{cm}^3\) will be