Q.

Electron falls from 7th energy level and lower energy levels to produce bands in the Paschen series. The total number of bands obtained will be 

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a

2

b

1

c

3

d

4

answer is D.

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Detailed Solution

Paschen series is produced by jump to n = 3 and starting n = 7, so possible bond produced for transition are 

73,63,53 and 43

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