Atoms And Nuclei

Speed of an electron in Bohr's \(7^{\text {th }}\) orbit for Hydrogen atom is \(3.6 \times 10^{6} \mathrm{~m} / \mathrm{s}\). The corresponding speed of the electron in \(3^{\text {rd }}\) orbit, in \(\mathrm{m} / \mathrm{s}\) is :