How many numbers of spectral lines are observed when hydrogen atoms are excited from ground state to the state of principal quantum number 4?
A. 2
B. 3
C. 5
D. 6
Answer:D
How many numbers of spectral lines are observed when hydrogen atoms are excited from ground state to the state of principal quantum number 4?
A. 2 B. 3 C. 5 D. 6