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Potassium's chemical symbol is "K". It is located with the metals on the periodic table in the fourth row and first column. It is a member of the alkali family and is in the first group and fourth period of the periodic table.

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Protons: 19
Neutrons: 21
Electrons: 19
Atomic Mass: 39.0983 amu
Atomic Number: 19

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Potassium was discovered in 1807 by Sir Humphry Davy. This element was discovered through isolation in electrolysis. Potassium was the first metal isolated by electrolysis. Sodium was later discovered by the same scientist through a very similar isolation process.

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Boiling Point:  760°C
Melting Point:  63.2° C
Density: 0.89 grams per cubic centimeter
State at room temperature:  Solid
-Soft, silvery-white metal
-Good conductor of heat and electricity
-Extremely sectile

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-Very active in nature
-Reacts violently with water, gives off hydrogen gas, and catches fire
-Potassium reacts readily with all acids and with all non-metals (sulfur, chlorine, phosphorous)

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1s²2s²2p⁶3s²3p⁶4s¹.

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It is the seventh most abundant element in Earth's crust, constituting 2.6 percent of its mass.

Found in the Dead Sea

Compounds used in fertilizers

Potassium hydroxide (KOH) is used to make soaps, detergents and drain cleaners.

Potassium carbonate (KHCO3), also known as pearl ash, is used to make some types of glass and soaps and is obtained commercially as a byproduct of the production of ammonia.

Potassium superoxide (KO2) can create oxygen from water vapor (H2O) and carbon dioxide (CO2)

Potassium nitrate (KNO3) is used in match heads and pyrotechnics

Also found in bananas

Potassium is known as an electrolyte, and this helps to maintain a healthy balance of fluids in the human body. It also helps to transmit electrical pulses to allow for proper nerve and muscle function.