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Will exposure to blue light cause electrons to be emitted from cesium?
Yes, exposure to blue light can cause the photoelectric effect in cesium, leading to the emission of electrons. Blue light has enough energy to overcome the work function of cesium, which allows electrons to be emitted from its surface.
Solid cesium oxide is added to water?
When solid cesium oxide is added to water, it reacts to form cesium hydroxide and releases heat. Cesium hydroxide is a strong base that can cause burns on contact with skin and mucous membranes. It also forms cesium hydroxide solution, which is highly corrosive and can cause damage if mishandled.
Cesium why blue in alkali?
Caesium metal is gives a bright blue solution when dissolved in liquid ammonia. The dissolving is believed to cause the production of caesium ions and a free electron. a similar blue colr is produced by sodium, potassium and rubidium. In aqueous alkali solutions caesium ion is colorless and therefore unless the anion is colored the solution is colorless.
How many electrons are emitted when calcium is flashed with light of wavelength 340nm and intensity of 50 percent?
This question can likely be answered using the formula E=hc/w where w is wavelength, h is Planck's constant, c is the speed of light, and E is energy in Joules. 5 electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent.
Is cesium dangerous to humans?
Very nearly 100% of cesium found in nature is not radioactive. Nevertheless, cesium has the highest number of isotopes of any element, 32, and all but one are radioactive.There are three radioactive isotopes of cesium produced in fission, and when one hears with concern that cesium was released in a nuclear accident, the reference is to two of these with half lives long enough to remain for some time.A tiny amount of cesium-137, a fission byproduct, is present in soil worldwide as a result of nuclear bomb testing. This material has a half life of about 37 years, and so is declining. Very small amounts are lost from nuclear power plants from time to time, and there was fair amount lost into the environment near the Chernobyl plant; in fact there was enough that mushrooms, which concentrate cesium, have historically been considered unsafe to eat if they grew in that area, because of the amount they contained.Cesium-135, which has a half life of nearly three million years, is also an important byproduct of fission. Since its immediate precursor, xenon-135, has a large neutron capture cross section, most of it is changed into xenon-136, and not much cesium-135 is produced in nuclear reactors, where it is only about 0.7% of the waste product. In nature, however, the xenon-135 nearly all decays into cesium, and over 6% of the byproduct of the waste of natural uranium fission is cesium-135. This being the case, it can be found in traces in uranium ore deposits.There are different isotopes of Caesium, most of them radioactive. Still the type of radiation differs strongly between isotops, from practically harmless to extremly dangerous. As long as you don't know which isotope of Cs you are handling you will not know what radiation precautions to follow.
Will exposure to blue light cause electrons to be emitted from cesium?
Yes, exposure to blue light can cause the photoelectric effect in cesium, leading to the emission of electrons. Blue light has enough energy to overcome the work function of cesium, which allows electrons to be emitted from its surface.
Is cesium poisionous?
Cesium is alkakine. It has alot of it in it. So it probably is poisionous. Because alakine is very poisionous. Watch out! Cesium also melts in room temperature and explodes with water. What a crazy element ya think?
Why is it not possible to get electrons from metal even when light of high frequency fall on its surface?
High-frequency light can cause electrons to be emitted from a metal's surface through the photoelectric effect. However, if the energy of the photons is still not high enough to overcome the metal's work function (the minimum energy needed to release an electron), then electrons cannot be emitted.
Is cesium toxic?
Cesium compounds normally found are not considered particularly toxic, though, like anything else, an excessive amount of cesium is not good for you. It is said to make people irritable and cause spasm because it replaces potassium in the body. Metallic cesium reacts violently with water, and is not something you want to touch. Cesium isotopes leaked from nuclear power plants can be a serious problem because of their radioactivity.
What is the thresh hold frequency of cesium?
The function of a photoelectric material is the energy that a photon of light must possess to just expel an electron from the surface of a material. The work function of cesium is 3.42 x 10^-19 Joules.Ê
Solid cesium oxide is added to water?
When solid cesium oxide is added to water, it reacts to form cesium hydroxide and releases heat. Cesium hydroxide is a strong base that can cause burns on contact with skin and mucous membranes. It also forms cesium hydroxide solution, which is highly corrosive and can cause damage if mishandled.
Use Einstein photoelectric equation to explain Why for a particular metal electrons are emitted only when the frequency of the incident radiation is greater than a certain value?
The photoelectric effect occurs when photons with sufficient energy strike a metal surface, causing electrons to be emitted. According to the Einstein photoelectric equation, the energy of the emitted electron is equal to the energy of the incident photon minus the work function of the metal. Therefore, only photons with energy greater than the work function of the metal can overcome the binding energy of the electrons and cause emission. This is why electrons are emitted only when the frequency (or energy) of the incident radiation is greater than a certain value.
Why is it bad being exposed to microwaves?
Exposure to microwaves can potentially lead to tissue heating and burns if the exposure is prolonged or at high levels. While the radiation emitted from microwaves is non-ionizing and does not cause damage to DNA like ionizing radiation, caution should be taken to prevent excessive exposure to microwaves.
Does cesium combine with water?
Yes, cesium reacts very vigorously with water to produce cesium hydroxide and hydrogen gas. This reaction is so violent that it can cause an explosion, making cesium one of the most reactive metals with water.
Cesium why blue in alkali?
Caesium metal is gives a bright blue solution when dissolved in liquid ammonia. The dissolving is believed to cause the production of caesium ions and a free electron. a similar blue colr is produced by sodium, potassium and rubidium. In aqueous alkali solutions caesium ion is colorless and therefore unless the anion is colored the solution is colorless.
Exposure to what element can cause mental retardation?
Exposure to lead can also cause mental retardation.
How many electrons are emitted when calcium is flashed with light of wavelength 340nm and intensity of 50 percent?
This question can likely be answered using the formula E=hc/w where w is wavelength, h is Planck's constant, c is the speed of light, and E is energy in Joules. 5 electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent.
