explain emissions lines and absorption line
Answers
Answer:
Emission lines refer to the fact that glowing hot gas emits lines of light whereas absorption lines refers to the tendency of cool atmospheric gas to absorb the same lines of light . When light passes through the gas in the atmosphere some of the light at particular wavelengths is scattered resulting in darker bands .
Emission Spectrum
When energy is absorbed by electrons of an atom, electrons move from lower energy levels to higher energy levels. These excited electrons have to radiate energy to return to ground states from the excited state, which is unstable. The emission spectrum is formed by the frequencies of these emitted light.
Absorption Spectrum
On the other hand, an absorption spectrum is constituted by the frequencies of light transmitted with dark bands when energy is absorbed by the electrons in the ground state to reach higher energy states.
