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 $


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