Answer Posted / suneetha verma
Flame emission spectroscopy (FES) is a form of emission
spectroscopy in which energy is provided to a sample
through use of a flame. This energy is absorbed by the
sample by promoting its electrons to a higher energy level.
The energy is used in doing work against the electrostatic
attraction between the electrons and the nucleus.
After a short period of excitation, the electrons drop back
to their previous, more stable state known as the ground
state and the absorbed energy is emitted. The wavelength
and intensity of this emitted radiation can be measured,
resulting in an electromagnetic spectrum.
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