Suppose that a certain atom had just 4 different energy levels. How many different frequencies could be emitted by this atom?
A) 10
B) 4
C) 6
D) 16
E) an infinite number.

Question

Quizplus · Accepted Answer

The number of different frequencies emitted corresponds to the number of possible transitions between energy levels. With 4 energy levels, there are 6 possible transitions: 3 between adjacent levels, and 3 between non-adjacent levels.

Suppose That a Certain Atom Had Just 4 Different Energy