Atomic Structure Question 432

Question: What should be the kinetic energy and total energy of the electron present in hydrogen atom, if its potential energy is $ -5.02eV $ -

Options:

A) $ +2.51eV,-2.51eV $

B) $ +0.251eV,-0.251eV $

C) $ -2.51eV,-2.51eV $

D) $ +2.51eV,+2.51eV $

Show Answer

Answer:

Correct Answer: A

Solution:

  • $ Total,energy=\frac{Potentialenergy}{2}=\frac{-5.02}{2} $ Total energy $ =-2.51eV $ Kinetic energy = - Total energy $ =-( -2.51eV )=+( 2.51eV ) $


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