Answer :
Answer:
so total 6 spectral lines are possible here
Explanation:
Since the electron is at excited state of n= 4
so here we have electron from nth excited to lower possible state
here the lower most energy state is ground state
so we will have
[tex]N = ^nC_2[/tex]
here we know
n = 4
[tex]N = ^4C_2[/tex]
[tex]N = \frac{4(4 -1)}{2}[/tex]
[tex]N = 6 lines[/tex]
so total 6 spectral lines are possible here