The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters. Note: The diagram is not drawn to scale.
-Which transition involves the longest wavelength line in the visible portion of the hydrogen spectrum?
A)A
B)B
C)C
D)D

Question

The figure shows an energy level diagram for the hydrogen atom. Several transitions are shown and are labeled by letters.  Note: The diagram is not drawn to scale.
-Which transition involves the longest wavelength line in the visible portion of the hydrogen spectrum?
A)A 
B)B 
C)C 
D)D

Quizplus · Accepted Answer

The longest wavelength in the visible portion of the hydrogen spectrum corresponds to the transition from n=3 to n=2, known as the Balmer series.

The Figure Shows an Energy Level Diagram for the Hydrogen