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Grade:

                        

If 9.9 eV energy is supplied to H atom, the no. of spectral lines emitted is equal to-

2 years ago

Answers : (1)

Arun
24737 Points
							
 
 
9.9 eV taken to be approx. as 10 then number of spectral lines  could be =>
n(n-1)/2 = 10
we get,
n^2 – n -20 = 0 
on solving the quadratic we get,
 n = 5.
5 spectral lines are possibly emitted.
 
Hope it helps
 
Regards
Arun (askIITians forum expert)
2 years ago
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