Number of spectral lines of Lyman series obtain in He+ ion sample when

1.	Number of spectral lines of Lyman series obtain in He+ ion sample when electron de- excited from 4th excited state is?
Answer» Answer: The answer is 6 spectral lines. Explanation: The general FORMULA for the number of spectral lines EMITTED is N = (n2 - N1)(n2 - n1 +1)/2 N = (4 -1)(4-1 + 1)/2 N = 3 x 4/2 N = 12/2 N = 6 Thus there are 6 transitions and 6 spectral lines possible. Which are 4 ---> 3 4 ---> 2 4 ---> 1 3 ---> 2 3 ---> 1 2 ---> 1

Number of spectral lines of Lyman series obtain in He+ ion sample when electron de- excited from 4th excited state is?

Answer»

Answer:

The answer is 6 spectral lines.

Explanation:

The general FORMULA for the number of spectral lines EMITTED is

N = (n2 - N1)(n2 - n1 +1)/2

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

N = 3 x 4/2

N = 12/2

N = 6

Thus there are 6 transitions and 6 spectral lines possible. Which are

4 ---> 3

4 ---> 2

4 ---> 1

3 ---> 2

3 ---> 1

2 ---> 1