The Gmelin Handbook of Inorganic Chemistry is a comprehensive reference work that provides detailed information on inorganic compounds and elements. It covers a wide range of topics, including chemical properties, structures, and reactions, making it an essential resource for chemists and researchers in the field of inorganic chemistry. First published in the 19th century, the handbook has undergone numerous updates and revisions to include the latest scientific findings. It is organized systematically, allowing users to easily locate information on specific compounds, such as transition metals and lanthanides, as well as their applications in various industries.