Atoms And Nuclei Question 305
Question: Hydrogen atom is excited from ground state to another state with principal quantum number equal to 4. Then the number of spectral lines in the emission spectra will be:
Options:
A) 2
B) 3
C) 5
D) 6
Show Answer
Answer:
Correct Answer: D
Solution:
- The possible number of the spectral lines is given $ =\frac{n( n-1 )}{2}=\frac{4( 4-1 )}{2}=6 $
