Potassium is a chemical element with symbol K and atomic number 19. It was first
isolated from ..... The most recently
Jun 30, 2015
History. From the English word, potash - pot ashes; Latin kalium, Arab qali, alkali.
Isotope, Half Life. K-39, Stable. K-40, 1.28E9 years. K-41, Stable. K-42, 12.4
hours. K-43, 22.3 hours. Facts. Date of
In 1806 English chemist Sir Humphry Davy
Alkali metals are so reactive that they never occur in uncombined form in nature. Many metals can be isolated from their minerals by reduction with carbon or ...
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