In the Balmer series of lines of the hydrogen spectrum,the third line from the red end corresponds to which one of the following inter-orbit jumps of the electron for Bohr orbits in an atom of hydrogen?
- A$n = 3 \to n = 2$
- B$n = 5 \to n = 2$
- C$n = 4 \to n = 1$
- D$n = 2 \to n = 5$
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