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Emission and Absorption Spectra

In the emissi...

Question

In the emission line spectra of hydrogen atom, how many lines can be accounted for by all possible electron transitions between five lowest energy levels within the atom ?

A

4

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B

5

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C

10

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D

20

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Solution

The correct option is A 4
Number of spectral lines possible for a given n value is $(n - 1)$
So for the 5 energy levels it is 4.
Hence option A is correct.

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