COMEDK · Physics · 28. Atomic Physics
An atom with one electron has ionization energy of 24 eV. An electron in this atom makes a transition from an excited energy level, where E = -15 eV, to the ground state. What is the wavelength of the emitted photon from this transition?
- A \(138\ \text{nm}\)
- B \(496\ \text{nm}\)
- C \(775\ \text{nm}\)
- D \(112\ \text{nm}\)
Answer & Solution
Correct Answer
(A) \(138\ \text{nm}\)
Step-by-step Solution
Detailed explanation
The ionization energy of the atom is \(24\ \text{eV}\), which means the energy of the ground state is \(E_1 = -24\ \text{eV}\). The energy of the excited state is given as \(E_2 = -15\ \text{eV}\). When the electron transitions from the excited state to the ground state, the…
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