👉 Rarefiers are a type of rare earth element that is not commonly found in the Earth's crust but has a unique chemical composition and properties. They are often referred to as "dwarf elements" due to their low atomic number, which makes them less abundant than other heavy elements like iron or nickel. Rarefiers have a relatively short half-life compared to other rare earth elements. This means that they can be produced in large quantities without being depleted by natural processes, such as weathering