How lines of spectra is obtained Flashcards Preview

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Flashcards in How lines of spectra is obtained Deck (5):
1

1.

The electron of a hydrogen atom for example can have many energy values
-Normally the electron will occupy the lowest energy state which is the ground state

2

2.

However if the electron absorb energy from heating or collision with another electron it may be promoted to a higher energy level
It must have the right amount of energy to be able to be promoted

3

3

This promotion will send the electron in an exited state , however the electron is unstable an d will send the electron to a lower level. In this process of returning the electron will have to lose energy which is emitting a photon of electromagnetic radiation

4

4.

This movement of electron between energy level are called transition
- Each of this transition results in an emission of a photon with a particular wavelength which produce a line spectra

5

5.

Downward transition will result in emission
Upward transition will reusult in Absorbtion