Gourt > Science > Chemistry > Elements > Potassium
Potassium is the chemical element in the periodic table. It has the symbol K (L. kalium) and atomic number 19. The name "potassium" comes from the word "potash", as potassium was first isolated from potash. Potassium is a soft silvery-white metallic alkali metal that occurs naturally bound to other elements in seawater and many minerals. It oxidizes rapidly in air and is very reactive, especially toward water. In many respects, potassium and sodium are chemically similar.
Notable characteristics
With a density less than that of water, potassium is the second least dense metal after lithium. It is a soft, low-melting solid that can easily be cut with a knife. Freshly cut potassium is silvery in appearance but it quickly tarnishes. It oxidizes in air rapidly and thus should be protected for storage. Often samples are maintained under an inert medium such as kerosene.
Similar to other alkali metals but more so than Li and Na, potassium reacts violently with water producing hydrogen. The reaction is sufficiently exothermic that the evolved hydrogen gas ignites. Potassium and its compounds emit a violet color in a flame. This fact is the basis of the flame test for the presence of potassium in a sample.
More on [ Potassium ]
Potassium :: Vitamins and Minerals
Alkali Metals :: Elements
@MrsMalki and did you know that it has more potassium than a banana, and more vitamin c than an orange?
FlakintheBox (Flak Watson) Thu, 07 Jan 2010 01:07:09 -0000
@MrsMalki and did you know that it has more potassium than a banana, and more vitamin c than an orange?
RT @GardenCuizine: White Beans Nutrition: 1cup(179g) = Protein:17g(35%DV),Fiber:11g(45%DV), Folate:145mcg(36%DV), Potassium:1004mg(29%DV ...
kitchentherapy (Linda Simon) Thu, 07 Jan 2010 00:57:43 -0000
RT @GardenCuizine: White Beans Nutrition: 1cup(179g) = Protein:17g(35%DV),Fiber:11g(45%DV), Folate:145mcg(36%DV), Potassium:1004mg(29%DV ...
@SRN_lol pigs r chockcull of potassium similar to bananas, peel away and eat if ur cramping up, shit on Gatorade #pigpussy #potassium
mmaisgay (NOKIA PHONE) Wed, 06 Jan 2010 23:59:39 -0000
@SRN_lol pigs r chockcull of potassium similar to bananas, peel away and eat if ur cramping up, shit on Gatorade #pigpussy #potassium
Update: Charly is doing better, potassium levels almost normal. Hopefully she can come home tomorrow. Plz keep everything crossed for us.
rottenspice (Cara DeCarlo) Wed, 06 Jan 2010 23:52:21 -0000
Update: Charly is doing better, potassium levels almost normal. Hopefully she can come home tomorrow. Plz keep everything crossed for us.
Good day. Only downside is that I have crippling leg pain. Damn you, potassium deficiency!
michaelnixon (Michael Nixon) Wed, 06 Jan 2010 23:50:18 -0000
Good day. Only downside is that I have crippling leg pain. Damn you, potassium deficiency!
...and only 20 mg. Vit.C., with 51 mg. Magnesium, 767 mg. Potassium, in addition to other Vit./Min./& Amino Acids
Ga6riella (Jane Mercer Kostiha) Wed, 06 Jan 2010 23:43:51 -0000
...and only 20 mg. Vit.C., with 51 mg. Magnesium, 767 mg. Potassium, in addition to other Vit./Min./& Amino Acids
ChemGlobe: Potassium - Electronic, thermal, and steric data along with basic information.
Meta Description: [ The chemical element [K] - Potassium - Datasheet ]
ChemicalElements.com: Potassium - Basic information, atomic structure, and isotopes.
404
EnvironmentalChemistry.com: Potassium - Atomic structure, chemical and physical properties, and table of nuclides.
It's Elemental: Potassium - Basic physical and historical information.
Meta Description: [ The Element Potassium - Basic Physical and Historical Information ]
LANL: Potassium - Sources, uses, properties, and isotopes.
Lenntech: Potassium - Physical data, chemical properties, and health effects.
Meta Description: [ chemical properties, health and environmental effects of potassium ]
500
Potassium - Data tables and historic information.
Radiochemistry of Potassium - Full text of the monograph by William T. Mullins and G. W. Leddicotte (Oak Ridge National Laboratory, Oak Ridge, Tennessee). [PDF]
Visual Elements: Potassium - Image, animation, source, uses, physical information, and key isotopes.
404
WebElements: Potassium - Extensive information on history, uses, occurrence, compounds, and properties of the element.
Meta Description: [ This WebElements periodic table page contains key information for the element potassium ]
Wikipedia: Potassium - Properties of the element, including its history, applications, and characteristics.
| Terrorismo | |
| Next Video | |
