JEE Main2014ChemistryStructure of AtomActual
If m and e are the mass and charge of the revolving electron in the orbit of radius r for hydrogen atom, the total energy of the revolving electron will be:
Options
- A1 2 e^2 r
- B- e^2 r
- Cm e^2 r
- D- 1 2 e^2 r
Correct answer
D. - 1 2 e^2 r
Step-by-step solution
Total energy of a revolving electron is the sum of its kinetic and potential energy. Total energy = K.E. + P. E. = e^2 2 r + (- e^2 r )=- e^2 2 r