Can someone explain the difference line spectra and emissions spectra? When an o
ID: 713866 • Letter: C
Question
Can someone explain the difference line spectra and emissions spectra?When an object is heated it produces a continuous spectrum, is it because heat is being supplied to the object and as it gets hotter and hotter its wavelength changes?
The emissions spectra of atoms in theirs gas phase do not show a continuous spectra , the atoms produce bright lines in different parts of the visible line spectrum, why is that?
If anyone can is willing to give more information about this matter, it would be greatly appreciated.
Thank you Can someone explain the difference line spectra and emissions spectra? Can someone explain the difference line spectra and emissions spectra?
When an object is heated it produces a continuous spectrum, is it because heat is being supplied to the object and as it gets hotter and hotter its wavelength changes?
The emissions spectra of atoms in theirs gas phase do not show a continuous spectra , the atoms produce bright lines in different parts of the visible line spectrum, why is that?
If anyone can is willing to give more information about this matter, it would be greatly appreciated.
Thank you
Explanation / Answer
Line spectra is generally found when emission occur from an element or an atom Which are present in low energy states. They show variety frequencies and wavelengths of electromagnetic radiations as a result each line is unique and distinguishable in nature. These are discrete lines.
Emission spectra:- is obtained when a molecule from a higher state {excited state} return to lower energy levels by emitting a photon thus resulting in the production of light.
Emission spectra of atoms in their gas phase do not show continous spectra this is when an atom is in the excited state the energy of electrons is very high and in order to relax it comes to the ground state by liberating energy in the form of light. The electrons present in the atoms will be excited by absorbing a specific amount of energy as a result will emit a specific energy of light hence it will not show all the frequencies show it will not show the continuous spectrum as it contains all frequencies.
Atoms produce blue light in different part of visible spectrum because each element has different arrangement of electrons so every element will require different amount of energy for excitation of e and emit a specific amount of energy.hence it is characteristic of every element.so the blue light appears at different regions in visible spectrum.
The spectra which contains all colours or in other words which contains all frequencies or wavelength is known as continuous spectrum.example is raivnbow which show all colors of all frequencies.when a object is heated normally every element is above the absolute zero it emits electromagnetic radiation of all frequencies. as the temp is increased more light is produced and also the peak shifts to higher frequencies because with the increase in temperature vibrations increase and more transitions will occur.