Iodine and fluorine are different elements, though they belong to the same group in the periodic table, known as the halogen family. Potassium iodide and potassium fluoride are also distinct compounds, as they are composed of different elements. While both iodine and fluorine share some similarities in their chemical properties due to their classification as halogens, they exhibit different behaviors and characteristics. The discussion highlights the importance of understanding the distinctions between these elements and their respective compounds.