Question

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

Hint:

In atomic physics, when an electron moves to a higher energy level, the kinetic energy decreases and potential energy increases.

Answer 1

The Correct Option is B

In this case, when a hydrogen atom is raised to an excited state, it gains potential energy, but the kinetic energy decreases because the atom is less tightly bound in the higher energy state. The potential energy increases as the electron moves farther from the nucleus.