An electron makes a transition from n = 7 state to n = 3 state in the hydrogen atom. What is the frequency of the emitted photon?

An electron makes a transition from n = 7 state to n = 3 state in the

1.	An electron makes a transition from n = 7 state to n = 3 state in the hydrogen atom. What is the frequency of the emitted photon?
A.	2 X 1014 Hz
B.	3 X 1014 Hz
C.	4 X 1014 Hz
D.	5 X 1014 Hz
Answer» C. 4 X 1014 Hz