Velocity of the electron in the 1st Bohr orbit of H-atom is 

Velocity of an electron present in first orbit of H-atom is calculated as:

$$\begin{gathered} v_n=2.18\times {10}^6\times \frac{\mathrm{Z}}{\mathrm{n}} \mathrm{m}/\mathrm{s} \\ {\mathrm{v}}_1=2.18\times {10}^6\times \frac{1}{1} \mathrm{m}/\mathrm{s}=2.18\times {10}^6 \mathrm{m}/\mathrm{s} \end{gathered}$$