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Name Potassium
Atomic Number 19
Atomic Weight 39.0983 (1)
Symbol K
Melting Point ( °C ) 146.1°F (63.38°C)
Boiling Point ( °C ) 1,398°F (758.8°C)
Density (g/cm3) 0.89 g/cm3
Earth crust (%) 2.6
Discovery (Year) 1807
Group 1
Electron configuration 1s22s22p63s23p64s1.
Ionization energy (eV) 48.4 kJ mol-1.

Potassium Potassium is the nineteenth element on the Periodic Table. Potassium’s symbol is (K). It is an Alkali metal meaning this particular element is abundantly reactive element. Akali metals are found in Group one of the Periodic Table. This particular element is one of the most reactive metals. Potassium is light and cuttle. This element is no less than dense. When Potassium comes in contact with water it like most alkali group metals will seize on fire. Potassium has a red/violet color due to it’s variations of it’s energy levels in the valence shells. The color is only visible during its excited state which when an element has been in contact with such things as a fire from the heat (it gets hyper). Potassium was named after the word Potash. It has a silvery color to it. It is found inherently in human bodies as well as in the Earth’s crust, bodies of water, the sun, meteorites, used also in the biological field for roles as an oral medication to treat kidney and gastrointestinal diseases. This element is not found in nature it is usually extracted during a laboratory process of electrolysis. (K) was used in soap making, making gunpowder, and dyeing. This element was discovered in the year of 1807 by Humphry Davy. This chemist observed and experimented with potassium and noted it’s unique flame color and it’s reaction with water. Potassium has a density of 0.89 grams per cubic centimeter. (K) has a melting point of 336.53 K (63.38°C or 146.08°F), and a boiling point of 1032 K (759°C or 1398°F). It is a solid at room temperature. Potassium is a metal. This element has many vital compounds to our lives such as Potassium chloride which is commonly used in making fertilizers, it is also used in preventing low blood levels of potassium. (K) creates an alloy with NaCi used in transferring heat for nuclear reactors.


Winter, Mark. "Potassium." WebElements Periodic Table of the Elements. WebElements, n.d. Web. 18 Oct. 2014. <http://www.webelements.com/potassium/>.

Kellie Berman, Nilshita Devi. "Group 1: The Alkali Metals."Http://chemwiki.ucdavis.edu/. N.p., n.d. Web. 18 Oct. 2014. <http://chemwiki.ucdavis.edu/Inorganic_Chemistry/Descriptive_Chemistry/s-Block_Elements/Group__1%3A_The_Alkali_Metals>. "Potassium." - Element Information, Properties and Uses. Royal Society of Chemistry, n.d. Web. 18 Oct. 2014. <http://www.rsc.org/periodic-table/element/19/potassium>.

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