The formula for the Paschen series for the Hydrogen spectrum is _.
Correct answer: D. 1/λ=Rh(1/32 - 1/n2); n=4,5,6
- A. 1/λ=Rh(1/22 - 1/n2); n=3,4,5
- B. 1/λ=Rh(1/42 - 1/n2); n=2,3,4,5
- C. 1/λ=Rh(1/42 - 1/n2); n=5,6,7
- D. 1/λ=Rh(1/32 - 1/n2); n=4,5,6
Explanation
The correct formula for the Paschen series is Option D: 1/λ=Rh(1/32 - 1/n2); n=4,5,6. The Paschen series refers to electron transitions ending at the n=3 energy level, resulting in spectral lines in the infrared region. The other options represent different series or incorrect configurations: Option A represents the Balmer series, transitioning to n=2. Option B does not correspond to any recognised series due to its incorrect configuration. Option C represents the Brackett series, transitioning to n=4.
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