tell about cesium ..where is it available.. why it reacts with water. and tell some more reactions
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caesium is a metal and it is the most reactive element
★ Ceasium is found
in the minerals pollucite and lepidolite.
★Caesium metal reacts rapidly with water to form a colourless solution of Ceasium hydroxide (CsOH) and hydrogen gas (H2).It is a highly exothermic reaction.
Cs + H2O –› CsOH +H2
★. Cs(s) + O2(g) → CsO2(s)
2Cs(s) + F2(g) → CsF(s)
2Cs(s) + Cl2(g) → CsCl(s)
2Cs(s) + Br2(g) → CsBr(s)
2Cs(s) + I2(g) → CsI(s)
★ Ceasium is found
in the minerals pollucite and lepidolite.
★Caesium metal reacts rapidly with water to form a colourless solution of Ceasium hydroxide (CsOH) and hydrogen gas (H2).It is a highly exothermic reaction.
Cs + H2O –› CsOH +H2
★. Cs(s) + O2(g) → CsO2(s)
2Cs(s) + F2(g) → CsF(s)
2Cs(s) + Cl2(g) → CsCl(s)
2Cs(s) + Br2(g) → CsBr(s)
2Cs(s) + I2(g) → CsI(s)
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》Caesium or cesium is a chemical element. Its symbol is Cs and atomic number is 55.
》Cesium was discovered in 1861 by German chemists Robert Bunsen and Gustav Kirchhoff.
》It is a soft, silvery-gold alkali metal.
》Its melting point is 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.
》Caesium has physical and chemical properties similar to those of rubidium and potassium.
》 One of its radioactive isotopes, cesium-137, is widely used in a variety of medical and industrial applications.
》CHEMICAL PROPERTIES
Cesium is a very reactive metal. It combines quickly with oxygen in the air and reacts violently with water. In the reaction with water, hydrogen gas is released. Hydrogen gas ignites immediately as a result of the heat given off by the reaction. Cesium must be stored under kerosene or a mineral oil to protect it from reacting with oxygen and water vapor in the air.
》USES
☆It is used as a getter in bulbs and evacuated tubes.
☆Cesium is also used in photoelectric cells.
☆An important use of cesium today is in an atomic clock.
REACTION OF CESIUM WITH WATER
Cesium reacts with cold water to form hydrogen gas and a solution of cesium ions and hydroxide ions.
2Cs(s) + 2H₂O(l) → H₂(g) + 2Cs⁺(aq) + 2OH⁻(aq)
The reaction is so explosive that it often shatters the container.
》Cesium was discovered in 1861 by German chemists Robert Bunsen and Gustav Kirchhoff.
》It is a soft, silvery-gold alkali metal.
》Its melting point is 28.5 °C (83.3 °F), which makes it one of only five elemental metals that are liquid at or near room temperature.
》Caesium has physical and chemical properties similar to those of rubidium and potassium.
》 One of its radioactive isotopes, cesium-137, is widely used in a variety of medical and industrial applications.
》CHEMICAL PROPERTIES
Cesium is a very reactive metal. It combines quickly with oxygen in the air and reacts violently with water. In the reaction with water, hydrogen gas is released. Hydrogen gas ignites immediately as a result of the heat given off by the reaction. Cesium must be stored under kerosene or a mineral oil to protect it from reacting with oxygen and water vapor in the air.
》USES
☆It is used as a getter in bulbs and evacuated tubes.
☆Cesium is also used in photoelectric cells.
☆An important use of cesium today is in an atomic clock.
REACTION OF CESIUM WITH WATER
Cesium reacts with cold water to form hydrogen gas and a solution of cesium ions and hydroxide ions.
2Cs(s) + 2H₂O(l) → H₂(g) + 2Cs⁺(aq) + 2OH⁻(aq)
The reaction is so explosive that it often shatters the container.
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