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Hydrogen Spectra

The number of...

Question

The number of different wavelengths that is possible to be observed in the spectrum from a hydrogen sample if the atoms are excited to third excited state is:

A

3

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B

4

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C

5

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D

6

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Solution

The correct option is D $6$
The different wavelengths obtained $= (n - l) (n - l + 1)$
$= (3 - 1) (3)$
$= 6$

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