Answer
See the explanation
Work Step by Step
Atomic absorption is the absorption of electromagnetic radiation by atoms while atomic emission is the emission of electromagnetic radiation from atoms. So, the key difference between atomic absorption and atomic emission is that atomic absorption describes how atoms absorb certain wavelengths from the electromagnetic radiation whereas atomic emission describes how atoms emit certain wavelengths.
Furthermore, atomic absorption requires a source that can emit radiation while atomic emission occurs even in the absence of a source that emits radiation. Moreover, by absorbing, the electrons in an atom are excited to a higher energy level. By emission, excited electrons are coming back to a lower level. Therefore, this is another significant difference between atomic absorption and atomic emission.
