Question:medium

The electron in hydrogen atom undergoes transition from higher orbits to an orbit of radius 476.1 pm. This transition corresponds to which of the following series?

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Remember the order of hydrogen spectral series: Lyman (1), Balmer (2), Paschen (3), Brackett (4), Pfund (5). The radius scales with \(n^2\), so \(n=3\) means \(r \approx 9 \times r_1\). Since \(r_1 \approx 0.53 \text{ \AA}\), \(9 \times 0.53 \approx 4.77 \text{ \AA}\).

Updated On: Mar 26, 2026

Lyman
Paschen
Balmer
Pfund

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The Correct Option is B

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