argon 19 calcium
- enPR: pətăs′ēəm, IPA (key): /pəˈtæsiəm/
- Hyphenation: po‧tas‧si‧um
- (uncountable) Potassium is a soft, silvery metal that is never found unbound in nature. It has a symbol K and an atomic number of 19 and atomic weight of 39.0983. The symbol is taken from the Latin kalium.
- Potassium is a highly electronegative element.