In making a transition from state n = 1 to state n = 2,the hydrogen atom must
A)absorb a photon of energy 10.2 eV.
B)emit a photon of energy 10.2 eV.
C)absorb a photon of energy 13.58 eV.
D)emit a photon of energy 13.58 eV.

Question

Quizplus · Accepted Answer

When a hydrogen atom transitions from a lower energy state (n = 1) to a higher energy state (n = 2), it must absorb energy. The energy difference between these two states corresponds to a photon of energy 10.2 eV.

In Making a Transition from State N = 1 to State