Nd, or neodymium, is a chemical element with the symbol Nd and atomic number 60. It is a rare earth metal that belongs to the lanthanide series on the periodic table. Neodymium is known for its strong magnetic properties and is commonly used in the production of powerful magnets, such as those found in electric motors and headphones. In addition to its magnetic applications, neodymium is also used in various industries, including glass and ceramics, where it serves as a coloring agent. Its compounds are utilized in lasers and other optical devices, making it an important element in modern technology and manufacturing.