Abstract Through the research and analysis of the development history of the concept of potassium, it can be recognized that potassium is the first active metal found after the rise of electrochemistry. In the early 19th century, with the progress of scientific ideas and experimental conditions, potassium was the first prepared by electrolysis, but it was not identified as an element. In the middle 19th century, experimental verification of the potassium properties and the development of atomism led to the potassium concept was confirmation. The discovery of potassium isotopes in the 1920s formed the modern concept of potassium. Development history of potassium concept is not only the elements concept progressive process, but also the evolution history of the scientific methods and scientific ideas.
YUAN Zhen-Dong, MA Ming-Yang. The Development History of the Concept of Potassium and It's Significance[J]. Chinese Journal of Chemical Education, 2020, 41(22): 109-113.