When a hydrogen atom is raised from the ground state to third state

Question

When a hydrogen atom is raised from the ground state to third state (A) Both kinetic energy and potential energy increase (B) Both kinetic energy and potential energy decrease (C) Potential energy increases and kinetic energy decreases (D) Potential energy decreases and kinetic energy increases

Tardigrade Admin · Accepted Answer

When hydrogen atom is raised from the ground state to third state

E = \frac{E _{0}}{3 ^{2}}

or

E = \frac{E _{0}}{9}

or PE is

\frac{- 2 E _{0}}{9}

and

K E

is

\frac{E _{0}}{9}

while initially, PE was

- 2 E_{0}

and

K E

was

E_{0}

.
Hence, potential energy increases and kinetic energy decreases.

Q. When a hydrogen atom is raised from the ground state to third state

Both kinetic energy and potential energy increase

Both kinetic energy and potential energy decrease

Potential energy increases and kinetic energy decreases

Potential energy decreases and kinetic energy increases

When hydrogen atom is raised from the ground state to third state E=32E0​​ or E=9E0​​ or PE is 9−2E0​​ and KE is 9E0​​ while initially, PE was −2E0​ and KE was E0​. Hence, potential energy increases and kinetic energy decreases.