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Why potassium and caesium is rather than lithium are used in photoelectric effect?
Potassium and caesium are more commonly used in photoelectric effect experiments compared to lithium because they have lower work functions, making it easier to release electrons when light is shone on them. This results in a more pronounced and easily measurable photoelectric effect. Additionally, potassium and caesium have larger atomic sizes, which means their electrons are further away from the nucleus, facilitating the ejection of electrons in the photoelectric effect.
What chemical is burning when you see a violet purple flame?
When you see a violet-purple flame, it often indicates the presence of potassium compounds, such as potassium chloride or potassium nitrate. The specific element responsible for the color is potassium.
What is cesium used for?
On clock dials to flouresce in the dark. It is also used in the atomic clock. Cesium formate is sometimes used in oil drilling.
Is Cesium a radioactive element?
Only one naturally occurring isotope of cesium is known, cesium-133 (133Cs) which is not radioactive. A number of artificial radioactive isotopes of cesium are known also. One radioactive isotope of cesium is of special importance, cesium-137. It is produced in nuclear fission reactions. Read more on cesium in the link below.
What is CsNO2?
CsNO2 is cesium nitrite, a chemical compound with the formula CsNO2. It is a white solid that is soluble in water. Cesium nitrite is used in the production of ceramics and as a catalyst in organic reactions.
Why potassium and caesium is rather than lithium are used in photoelectric effect?
Potassium and caesium are more commonly used in photoelectric effect experiments compared to lithium because they have lower work functions, making it easier to release electrons when light is shone on them. This results in a more pronounced and easily measurable photoelectric effect. Additionally, potassium and caesium have larger atomic sizes, which means their electrons are further away from the nucleus, facilitating the ejection of electrons in the photoelectric effect.
What is radioisotopes potassium-40 and its uses?
is used in photoelectric cells.
Element used in photoelectric cells and in atomic clocks?
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Why alkali metals used in photoelectric effect?
Alkali metals are used in the photoelectric effect because they have low ionization energies, making it easier for photons to eject electrons from their surface. This makes them efficient materials for producing a photoelectric effect. Additionally, alkali metals have a clean surface that allows for reliable and consistent results in experiments.
Why are potassium and caesium rather than lithim used in photoelectric cells?
Potassium and caesium are used in photoelectric cells because they have lower work functions compared to lithium, making them more efficient at emitting electrons when exposed to light. This property allows them to generate a higher current in response to light, making them more suitable for photoelectric applications.
Who developed the theory of photons being quantized?
Einstein, and he used the theory to describe the photoelectric effect.
What element which is used in atomic clocks and photocells melts at temperatures slightly above room temperature?
That element is Cesium, which has a melting point of 28.5°C (83.3°F). It is utilized in atomic clocks due to its high accuracy in measuring time, and in photocells for its efficient photoelectric characteristics.
Why ultraviolet light is used in photoelectric effect?
Just visible light too can be used for photo electric phenomenon. But Hallwachs used UV rays as he used zinc plates. That is all. Moreover the energy of the photon has to be more than the work function of the material being used.
Which equation was used by Albert Einstein to explain the photoelectric effect?
Einstein used the equation E = hf to explain the photoelectric effect, where E is the energy of a photon, h is Planck's constant, and f is the frequency of the light. This equation shows that the energy of a photon is directly proportional to its frequency.
What was Einsteins contribution to our understanding of the photoelectric effect?
He wrote a paper that described the photoelectric effect. The paper contained equations used to explain why certain wavelengths of light cause the p-e effect but others do not and the energy changes in the electrons during the p-e effect.
What is the reverse process of photoelectric effect?
reverse process of photo electric effect is done by the supply of electrons or heat to the metal that radiate certain radiation. among them the metals which emit visible radiation are normally used in house hold appliances
What chemical is burning when you see a violet purple flame?
When you see a violet-purple flame, it often indicates the presence of potassium compounds, such as potassium chloride or potassium nitrate. The specific element responsible for the color is potassium.
