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Introduction to CFT

An electron i...

Question

An electron is excited to fourth excited state. How many spectral lines will be observed in the UV region of H spectrum?

A

4

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B

5

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C

3

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D

2

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Solution

The correct option is A 4
UV region corresponds to Lyman series and fourth excited state corresponds to $n = 5$ .

Number of lines in the Lyman series = $n_{2} - 1 = 5 - 1 = 4$

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