Discussion Forum



1)

 When a hydrogen atom is raised from ground  energy level  to excited energy level, then


A) Potential energy increases and kinetic energy decreases

B) Kinetic energy increases and potential energy decreases

C) Both KE and PE increase

D) Both KE and PE decrease

Answer:

Option A

Explanation:

As r increase, the potential energy increases. Thus, it decreases the kinetic energy of the hydrogen atom. So, when an atom jumps from one energy level to a higher level, its potential energy increases and kinetic energy  decreases