Question

Hydrogen atoms are excited to the stationary state designated by the principal quantum number, n= 4. What will be the number of lines(frequencies) emitted by the hydrogen atoms?

Answer 1

n =4 to n = 3
n = 4 to n = 2
n = 4 to n = 1
n = 3 to n = 2
n = 3 to n = 1
m = 2 to n = 1

Answer 2

4 because number of spectral lines are directly proportional to principal quantum number