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Potassium

potassium

(Science: chemistry) An alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (kalium).

It is reduced from the carbonate as a soft white metal, lighter than water, which oxidizes with the greatest readiness, and, to be preserved, must be kept under liquid hydrocarbons, as naphtha or kerosene. Its compounds are very important, being used in glass making, soap making, in fertilisers, and in many drugs and chemicals. Potassium permanganate, the salt KMnO4, crystallizing in dark red prisms having a greenish surface colour, and dissolving in water with a beautiful purple red colour; used as an oxidizer and disinfectant. The name chameleon mineral is applied to this salt and also to potassium manganate. Potassium bitartrate. See cream of tartar.

Origin: NL. See Potassa, Potash. A light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite.


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Is there any difference between different fertilizers?

Organic and chemical fertilizer ultimately providing the same elements i.e. nitrogen, potassium, phosphorus and other macro and micro nutrients to the plants. There is no difference in atomic structure of elements from both sources. For example, whether nitrogen from ...

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by josem
Mon Aug 04, 2014 3:49 pm
 
Forum: Physiology
Topic: Is there any difference between different fertilizers?
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Views: 514

Too many ions inside a neuron cell. What happens?

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by Coelacanth
Tue Dec 03, 2013 1:34 am
 
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Agriculture and Microbiology come together (Research Prjct)

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Extended sleeping

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by boron
Sat Nov 09, 2013 4:08 pm
 
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Topic: Extended sleeping
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List of enterohepatically cycled nutrients?

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by lourat
Sat Nov 09, 2013 6:18 am
 
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