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MHT CET 2021 (20 Sep, Shift 1) · Transitions, Photon Emission & Excitation

Transitions, Photon Emission & Excitation question from MHT CET 2021 (20 Sep, Shift 1)

Q46MHT CET 2021 · 20 SEP · SHIFT 1Easy

Transitions, Photon Emission & Excitation

The electron in hydrogen atom is initially in the third excited state. When it finally moves to ground state, the maximum number of spectral lines emitted are

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Answer: (d)

Third excited state means $n = 4$ .
Maximum lines $= \frac{n(n-1)}{2} = \frac{4\times3}{2} = 6$
So the answer is (d) $6$ .

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