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Question

In a sample ,electron jumps from 5th excited state to ground state then number of spectral lines in visible range will be:

A
4
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B
3
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C
2
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D
5
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Solution

The correct option is A 4
No. of lines =(n2n1)

=(62)

=4

=4Balmer,3Paschen,2Brackett,1Lymann=10

No. of spectral lines in Balmer series will be in visible range.

Hence no. of spectral lines in visible range will be 4.

Solution:- (A) 4 is correct

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