What is the maximum number of emission lines when the excited electron of a H atom in n = 6 drops to the ground state?



Q.15:- What is the maximum number of emission lines when the excited electron of a H atom in n = 6 drops to the ground state?

 

Answer:-



The number of spectral lines produced when an electron in the nthlevel drops down to the ground state is given by n(n-1)/2.

Given, n=6
∴ Number of spectral lines = 6×5/2 = 15
also given by, ∑(n2 – n1) = ∑(6-1) = ∑5 = 5+4+3+2+1 = 15