KCET2014PhysicsSemiconductors
What is the energy of the electron revolving in third orbit expressed in ( eV ) ?
Options
- A( 1.51 eV )
- B( 3.4 eV )
- C(4.53 eV
- DO ( 4 eV )
Correct answer
A. ( 1.51 eV )
Step-by-step solution
We know that, energy of electron revolving in ( n^ th ) orbit is given as ( E_ n = -13.6 n² ) For third orbit, ( n=3 ), ( E₃= -13.6 3² = -13.6 9 =-1.5111 eV ) Therefore, energy of electron revolving in third orbit is ( 1.51 eV )