پتاسیم

Potassium is a chemical element with the symbol K and atomic number 19. Its standard atomic mass is 39.0983. The element was discovered in 1807. It exhibits oxidation states of -1 and 1. The chemical formula is represented as K.

Physical properties include a melting point of 336.4 and a boiling point of 1038.7. The density is 0.862, and the standard molar entropy is 64.2. Electronegativity is measured at 0.82, with an ionic radius of 1.64. The electron configuration is [Ar] 4s¹. The Unicode character for potassium is 鉀.