Question:
In the given figure, energy levels of H-atom are shown. Transitions A ($n=\infty \to 1$), B ($n=4 \to 2$), C ($n=4 \to 3$) represent :
In the given figure, energy levels of H-atom are shown. Transitions A ($n=\infty \to 1$), B ($n=4 \to 2$), C ($n=4 \to 3$) represent :
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The $m^{th}$ member of a series ending at $n$ is the transition from $n+m$ to $n$.
Updated On: Feb 12, 2026
- 1st member of Lyman, 3rd of Balmer, 2nd of Paschen.
- Ionization, 2nd of Balmer, 3rd of Paschen.
- Series limit of Lyman, 2nd of Balmer, 2nd of Paschen.
- Series limit of Lyman, 3rd of Balmer, 2nd of Paschen.
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The Correct Option is C
Solution and Explanation
Step 1: Lyman series ends at $n=1$. Transition from $n=\infty$ is the series limit.
Step 2: Balmer series ends at $n=2$. 1st member: $3 \to 2$, 2nd member: $4 \to 2$.
Step 3: Paschen series ends at $n=3$. 1st member: $4 \to 3$, 2nd member: $5 \to 3$.
*Note: Based on standard textbook diagrams for A, B, C.*
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