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Docscientist
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When we shine a light of particular color on a metal,it expells the free electrons present in the metal.In that case,doesn't the metal get ionized ?
Can you elaborate more on that ? And you say they "miss a piece of electron", why can't that be called ionisation ?Borek said:There are no isolated, charged atoms, rather every single atom misses a piece of an electron.
In a metal, the outermost electrons are delocalised rather than bound to an individual atom, so no single metal atom loses an electron.Docscientist said:Can you elaborate more on that ? And you say they "miss a piece of electron", why can't that be called ionisation ?
What do you mean by delocalised ?Vagn said:In a metal, the outermost electrons are delocalised rather than bound to an individual atom, so no single metal atom loses an electron.
Have you tried the wikipoedia page on delocalized electrons?Docscientist said:What do you mean by delocalised ?
I just went through the page.I still can't get it.Even if it is delocalized,it is still a free electron that once belonged to the metal's atoms.So any way there is a losing that takes place.In that case,considering the metal to be ionized should be right,isn't it ?Vagn said:Have you tried the wikipoedia page on delocalized electrons?
Docscientist said:I just went through the page.I still can't get it.Even if it is delocalized,it is still a free electron that once belonged to the metal's atoms.So any way there is a losing that takes place.In that case,considering the metal to be ionized should be right,isn't it ?
The photoelectric effect is the phenomenon where electrons are emitted from a material when it is exposed to electromagnetic radiation, such as light. This effect was first described by Albert Einstein in 1905 and has since been used in various applications, such as solar panels and photocells.
The photoelectric effect occurs when photons from an incoming light beam strike the surface of a material with enough energy to knock electrons out of their atomic orbits. These electrons then become free to move, creating an electric current.
The number of electrons released in the photoelectric effect depends on the intensity and frequency of the incoming light, as well as the properties of the material. Higher intensity and frequency of light result in a greater number of electrons being emitted.
Free electrons are essential in the photoelectric effect as they are the ones that are released from the material and contribute to the electric current. The energy of the free electrons is also dependent on the frequency of the incoming light.
Yes, the photoelectric effect has been used to explain other phenomena, such as the Compton effect and the dual nature of light. It has also been applied in the development of technologies like electron microscopes and photodetectors.