If an electron is revolving around the hydrogen nucleus at a distance of 0.1 ~nm , what should be its speed?

Step-by-step solution

Electrostatic force = centripetal force 1 4 ₀ Z e² r² = m v² r v= ( 1 4 ₀ Z e² m r ) = 9 10⁹ 1 (1.6 10⁻¹⁹ )² (9.1 10⁻³¹ ) (0.1 10⁻⁹ ) =1.59 10⁶ ~ms -1