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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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