As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion:

kinetic energy, potential energy and total energy decrease

kinetic energy decreases, potential energy increases but total energy remains same

kinetic energy and total energy decrease but potential energy increases

its kinetic energy increases but potential energy and total energy decrease

As an electron makes a transition from an excited state to the ground

1.	As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion:
A.	kinetic energy decreases, potential energy increases but total energy remains same
B.	kinetic energy and total energy decrease but potential energy increases
C.	its kinetic energy increases but potential energy and total energy decrease
D.	kinetic energy, potential energy and total energy decrease
Answer» D. kinetic energy, potential energy and total energy decrease