Question

Hydrogen atoms are excited by a laser to the ????=4 state and then allowed to emit. What is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system?

Answer 1

so total 6 spectral lines are possible here

Step-by-step 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

`N = ^nC_2`

here we know

n = 4

`N = ^4C_2`

`N = (4(4 -1))/(2)`

`N = 6 lines`

so total 6 spectral lines are possible here