Atomic Number of Potassium

Potassium Atomic Number

Atomic Number of Potassium is 19.

Chemical symbol for Potassium is K. Number of protons in Potassium is 19. Atomic weight of Potassium is 39.0983 u or g/mol. Melting point of Potassium is 63,7 °C and its the boiling point is 774 °C.

» Boiling Point » Melting Point » Abundant » State at STP » Discovery Year

About Potassium

One of the vital elements for all living creatures, potassium exists in all living cells. Potassium is a very soft metal of light grey color which is very reactive with air and other chemical compounds. It is considered to be the 7th most abundant chemical element in the earth crust and it is usually processed from potassium chloride, which is quite abundant too. Potassium is essential for the cells of living organisms to maintain proper electrolyte and fluid balance. Daily dose of potassium for a human body is close to 7 grams, and we receive it mainly from foods like chocolate, nuts, bananas, potatoes, raisins, etc. This chemical element is used for producing fertilizers, and potassium also is important for producing glass. Various compounds involving potassium are heavily used in pharmaceutical industry.

Properties of Potassium Element

Atomic Number (Z)19
Atomic SymbolK
Atomic Weight39.0983 u
Density0.862 g/cm3
Melting Point (K)336.53 K
Melting Point (℃)63,7 °C
Boiling Point (K)1032 K
Boiling Point (℃)774 °C
Heat Capacity0.757 J/g · K
Abundance20900 mg/kg
State at STPSolid
DescriptionAlkali metal
Electronegativity (Pauling) χ0.82
Ionization Energy (eV)4.34066
Atomic Radius220pm
Covalent Radius196pm
Van der Waals Radius275
Valence Electrons1
Year of Discovery1807

What is the Boiling Point of Potassium?

Potassium boiling point is 774 °C. Boiling point of Potassium in Kelvin is 1032 K.

What is the Melting Point of Potassium?

Potassium melting point is 63,7 °C. Melting point of Potassium in Kelvin is 336.53 K.

How Abundant is Potassium?

Abundant value of Potassium is 20900 mg/kg.

What is the State of Potassium at Standard Temperature and Pressure (STP)?

State of Potassium is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Potassium Discovered?

Potassium was discovered in 1807.