FRANCIUM 😱 World's Most Expensive Element! #facts #askiitians Francium is a chemical element with the symbol "Fr" and atomic number 87. It is a highly radioactive alkali metal and is part of the alkali metal group on the periodic table, which includes elements like sodium and potassium. Francium is extremely rare in nature and is typically produced artificially in nuclear reactors. Here are some key points about francium: Radioactivity: Francium is one of the most radioactive elements, and it h