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How many spectrual lines are emitted by ...

How many spectrual lines are emitted by atomic Hydrogen, when an electron jumps from 5th energy level to ground state ?

A

5

B

10

C

15

D

4

Text Solution

Verified by Experts

The correct Answer is:
B
No. of spectral lines = `((n_2 - n_1)(n_2 - n_1 + 1))/(2)`
`= ((5 - 1) (5 - 1 + 1))/(2) = (4 xx 5)/2 = 10`.
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