Potassium

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Potassium
39.0983



  K
19
[Ar]4s1 1,4,s
[ ? ] Alkali Metal:
Properties:
Alkali


Potassium is the chemical element with the symbol K (from the Latin kalium) and atomic number 19. It is a silvery white alkali metal that is highly reactive. Potassium reacts violently with water, producing hydrogen.

Potassium in its cation form (K+) performs many different functions within the human body. K+ is essential for cellular function and maintaining homeostasis through action potentials.

Biochemistry

Potassium is a vital ion in cellular communication via the action potential.

Hyperkalemia occurs when there is too much potassium in the blood, and hypokalemia when there is a deficiency. Potassium levels in the body are balanced by levels of sodium.

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