Light is emitted as an electron transitions from a higher energy state to a lower energy state.How long does it take for the actual transition to take place?
A)several seconds
B)several microseconds
C)several nanoseconds
D)no time at all

Question

Quizplus · Accepted Answer

The actual transition of an electron from a higher energy state to a lower energy state takes no time at all as it is an instantaneous event. The time delay we observe is due to the time it takes for the emitted light to travel from the atom to our detector.

Light Is Emitted as an Electron Transitions from a Higher