Humphry Davy discovered a total of five chemical elements during his research. These elements are: sodium, potassium, calcium, magnesium, and barium.
Davy’s work primarily involved the use of electrolysis, which was a groundbreaking method at the time. Through this technique, he was able to isolate these elements from their compounds. For instance, he isolated sodium and potassium by electrolyzing molten sodium and potassium hydroxides, respectively.
His discoveries were significant contributions to the field of chemistry and helped lay the groundwork for future research in the area of electrochemistry. Davy was a pioneer in the study of elements and their properties, advancing the understanding of chemical science in many ways.