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Alkali metals (Chemical Properties (The reactivity of group 1 elements…
Alkali metals
Chemical Properties
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When an element in group 1 takes part in a reaction, its atoms lose their outer electron and form positively charged ions, called cations.
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In passing from lithium to francium, the single electron tends to be less strongly held.
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USES
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Sodium
The most ubiquitous use of sodium is in the form of sodium chloride, or table salt food
in the form of sodium borate, which is also known as borax; cleaning supplies
Potassium
In its chemical form, it’s so volatile that it can’t be stored in anything other than kerosene.
in the form of potash or potassium carbonate, used to create soap and glass, and, in the form of potassium nitrate, to make gunpowder.
Cesium
Applications like photoelectric cells, video equipment, radio tubes and military-grade infrared lamps.
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Physical Properties
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Low density
Lithium, sodium and potassium are low enought to float on water
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