|Group||1||Melting point||63.5°C, 146.3°F, 336.7 K|
|Period||4||Boiling point||759°C, 1398°F, 1032 K|
|Block||s||Density (g cm−3)||0.89|
|Atomic number||19||Relative atomic mass||39.098|
|State at 20°C||Solid||Key isotopes||39K|
|Electron configuration||[Ar] 4s1||CAS number||7440-09-7|
|ChemSpider ID||4575326||ChemSpider is a free chemical structure database|
- Potassium is the first element of the fourth period (row) in the periodic table.
- The term potassium arises from a material called Potash.
- The element has been in use for hundreds of years.
- People use the potassium salts as a constituent of fertilizer.
- It is one of the essential nutrients of the human body
- Potassium chloride is also used in injections.
- The element is always traced in combination with other elements.
- Once isolated, potassium turns into a malleable metal with a silver color profile.
- Potassium reacts with water violently and gives off hydrogen gas