# 9. Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?

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Here is the answer for the question - **9. Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon?**. You'll find the correct answer below

### 9. Which of the following transitions (in a hydrogen atom) represent emission of the longest wavelength photon? A. n = 3 to n = 4 B. n = 4 to n = 2 C. n = 1 to n = 3 D. n = 3 to n = 2 E. n = 5 to n = 4

**The Correct Answer is**

**n = 5 to n = 4**

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