👉 Erbium, also known as Erbium-197, is a rare and highly radioactive element found in the Earth's crust. It has been identified in various geological formations across the globe, including the Great Barrier Reef and the Mariana Trench. Erbiums are chemically similar to other elements like iron (Fe) and nickel (Ni), but they possess unique properties due to their high atomic number and density. Erbium is a transition metal that has a chemical
