In the given figure, the energy levels of hydrogen atom have been shown along with some transitions marked A, B, C, D and E. The transitions A, B and C respectively represent: (a) The series limit of Lyman series, second member of Balmer series and second member of Paschen series. (b) The ionization potential of hydrogen, second member of Balmer series and third member of Paschen series. (c) The series limit of Lyman series, third member of Balmer series and second member of Paschen series. (d) The first member of the Lyman series, third member of Balmer series and second member of Paschen series.

Answer: (c). A: continuum ( 0 eV) to n=1 is the series limit of the Lyman series. B: n=5 → n=2; Balmer members are 3→2 (1st), 4→2 (2nd), 5→2 (3rd), so B is the third member. C: n=5 → n=3; Paschen members are 4→3 (1st), 5→3 (2nd), so C is the second member. So the answer is (c).

In the given figure, the energy levels of hydrogen atom have been… | JEE Main 2021 (24 Feb, Shift 1)

Q37JEE Main 2021 · 24 FEB · SHIFT 1Medium

Energy of the Electron & Energy Levels

In the given figure, the energy levels of hydrogen atom have been shown along with some transitions marked A, B, C, D and E.

The transitions A, B and C respectively represent:

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Answer: (c)

A: continuum ( $0$ eV) to $n=1$ is the series limit of the Lyman series.
B: $n=5 \to n=2$ ; Balmer members are $3\to2$ (1st), $4\to2$ (2nd), $5\to2$ (3rd), so B is the third member.
C: $n=5 \to n=3$ ; Paschen members are $4\to3$ (1st), $5\to3$ (2nd), so C is the second member.
So the answer is (c).

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Energy of the Electron & Energy Levels question from JEE Main 2021 (24 Feb, Shift 1)

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