Difference between revisions of "Potassium"
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| + | [File:Potassium - Wikimedia Commons.jpg|200px|thumb|right|Potassium pearls under paraffin oil. The large pearl measures 0.5 cm. ]] | ||
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| + | Potassium is a silvery-white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses. It has the symbol K and atomic number 19. It is very reactive with water. | ||
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| + | The English name for the element potassium comes from the word "potash", referring to the method by which potash was obtained – leaching the ash of burnt wood or tree leaves and evaporating the solution in a pot. Potash is primarily a mixture of potassium salts. | ||
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| + | == Potassium as nutrient for plants == | ||
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| + | == Boron as nutrient in food == | ||
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| + | == References == | ||
| + | <references /> | ||
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| + | == External links == | ||
| + | * [http://www.nlm.nih.gov/medlineplus/potassium.html Potassium] MedlinePlus | ||
| + | * [http://en.wikipedia.org/wiki/Potassium Potassium] Wikipedia | ||
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[[Category:Nutrients in food]] | [[Category:Nutrients in food]] | ||
[[Category:Minerals]] | [[Category:Minerals]] | ||
[[Category:Nutrients for plants]] | [[Category:Nutrients for plants]] | ||
Revision as of 09:27, 22 January 2012
[File:Potassium - Wikimedia Commons.jpg|200px|thumb|right|Potassium pearls under paraffin oil. The large pearl measures 0.5 cm. ]]
Potassium is a silvery-white metallic element that oxidizes rapidly in the air and whose compounds are used as fertilizer and in special hard glasses. It has the symbol K and atomic number 19. It is very reactive with water.
The English name for the element potassium comes from the word "potash", referring to the method by which potash was obtained – leaching the ash of burnt wood or tree leaves and evaporating the solution in a pot. Potash is primarily a mixture of potassium salts.
Potassium as nutrient for plants
Boron as nutrient in food
References
