Question

How many spectral lines are seen for hydrogen atom when electron jump from n2=5 to n1=1?

Answer 1

The formula for the number of spectral lines emitted is  

N = (n2 – n1) (n2 – n1 + 1) /2

 = ( 5 - 1) ( 5 - 1 + 1 )/2 = 4 X 5/2 = 20/2 = 10

Therefore, 10 spectral lines are seen for hydrogen atom when electron jump from n2=5 to n1=1

Answer 2

Answer: The total number of spectral lines in the given transition are 10.

Explanation:

We are given:

An electron is undergoing a transition from n = 1 to n = 5.

To calculate the total number of spectral lines in the transition, we use the formula:

$N=\frac{(n_2-n_1)(n_2-n_1+1)}{2}$

where,

$n_1$ = lower energy level = 1

$n_2$ = higher energy level = 5

Putting values in above equation, we get:

$N=\frac{(5-1)(5-1+1)}{2}=10$

Hence, the total number of spectral lines in the transition are 10.