Question

The ground state energy of an atom is -13.6eV. What is the K.E and P.E of the electron in this state.

Answer 1

Answer

kinetic energy = 13.6 eV

Potential energy = -27.2 eV

Explanation

Given ,

• The ground state energy = - 13.6 eV

To find potential energy and kinetic energy in the same state , we should know that ,

• Kinetic energy = Total energy = Potential energy / 2

i. e.

• K. E. = T. E. = P. E. / 2

Here ,

• Total energy = - 13.6 eV

So,

• K. E. = 13.6 = P. E. / -2

Calculating Kinetic energy ,

• K. E. = 13.6 eV

Calculating potential energy ,

• P. E. ÷ -2 = 13.6 eV
• P. E. = -2 x 13.6
• P. E. = - 27.2 eV