Hydrogen atoms are excited from ground state of the principal quantum number 4. Then the number of spectral lines observed will be
Answer & explanation
Correct answer: option 2
Number of spectral lines $N_E=\frac{n(n-1)}{2}=\frac{4(4-1)}{2} = 6$
Hydrogen atoms are excited from ground state of the principal quantum number 4. Then the number of spectral lines observed will be
Correct answer: option 2
Number of spectral lines $N_E=\frac{n(n-1)}{2}=\frac{4(4-1)}{2} = 6$