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What is the maximum number of emission l...

What is the maximum number of emission lines are obtained when the excited electron of a H atom in n = 5 drops to the ground state?

A

10

B

5

C

12

D

15

Text Solution

Verified by Experts

The correct Answer is:
A
Number of emission lines in the spectrum will be equal to
`((n_(2)-n_(1))(n_(2)-n_(1)+1))/2` where `n_(2)=5` and `n_(1)` = 1.
`therefore((5-1)(5-1+1))/2=20/2` = 10 lines.
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