Question

calculate the radius and KE of an electron revolvingin the first orbit of hydrogen atoms

Answer 1

If the total energy of an electron revolving in orbit is E than; P.E=2E & K.E=-E

Total energy of electron in first Bohr orbit of hydrogen is -13.6ev.

Kinetic energy of electron in the first Bohr orbit of hydrogen is, K.E=-(-13.6ev)=13.6ev ans..