What Is the Energy of an Incident Photon That Is

question 1

Multiple Choice

What is the energy of an incident photon that is just enough to excite a hydrogen atom from its ground state to its n = 4 state?

• A) 12.75 eV
• B) 10.20 eV
• C) 3.40 eV
• D) 0.85 eV

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