Metals have closely spaced energy levels and a very small energy gap between fil
ID: 711859 • Letter: M
Question
Metals have closely spaced energy levels and a very small energy gap between filled and empty levels. Therefore, many transitions can take place with absorption and emission continually occurring.
The flickering we see is due to the fact that some electronic transitions fall in the visible region of the spectrum.
Relative to both semiconductors and insulators, metals have a very small energy gap, meaning that more light is randomly scattered from the surface. This random scattering gives the metals their flickering appearance.
The proximity of the valence band to the conduction band means that electrons can freely travel in the conduction band. This increased number of traveling electrons gives rise to the flickering appearance of many metals.
Metals have closely spaced energy levels and a very small energy gap between filled and empty levels. Therefore, many transitions can take place with absorption and emission continually occurring.
The flickering we see is due to the fact that some electronic transitions fall in the visible region of the spectrum.
Relative to both semiconductors and insulators, metals have a very small energy gap, meaning that more light is randomly scattered from the surface. This random scattering gives the metals their flickering appearance.
The proximity of the valence band to the conduction band means that electrons can freely travel in the conduction band. This increased number of traveling electrons gives rise to the flickering appearance of many metals.
Conduction Band Conduction BandConduction Band Energy gap d Energy gap Valence Band Valence Band Valence Band Metal Semiconductor InsulatorExplanation / Answer
Metals have closely spaced energy levels and very small energy gap between filled and empty levels,but insulaters have more energy gap between filled valence band and vacant conduction band,so transfer of electrons not possible, the proximity of the valence band to the conduction band means that electrons can freely in the conduction band .this increased number of traveling electrons gives rise to the flickering appearance of many metals.