The book “Features of chemistry and analytical determination of rare elements (Lithium, Beryllium, Rare Earth Elements)”, created by the team of authors, is a unique and in-depth study devoted to rare elements that play a key role in modern technologies and science. This work will be of interest not only to professional chemists and analysts, but also to students, graduate students, as well as anyone interested in chemistry and its applications in various fields. The book examines elements such as lithium and beryllium, as well as rare earth elements, which in recent years have become the object of close attention of scientists and industry. Lithium, for example, has become an indispensable component in the production of batteries for electric vehicles and mobile devices, and beryllium is used in the aerospace and defense industries due to its unique physical properties. Rare earth elements, in turn, are the basis for the creation of highly efficient magnets, catalysts and other technologies that determine the future of energy and electronics. The book not only describes the chemical properties of these elements, but also immerses the reader in the world of analytical methods used to determine them. The authors share the latest advances in analytical chemistry, including spectroscopic and chromatographic methods, and discuss their advantages and disadvantages. This makes the book a valuable resource for specialists in the analysis and study of rare elements, as well as for those who seek to understand how these methods are applied in practice. The topics raised in the book go beyond pure chemistry. It addresses the issues of ecology, sustainable development and technologies related to the extraction and processing of rare elements. In the face of growing demand for these resources, the authors raise important questions about the need for a responsible approach to their use and environmental protection. This makes the book relevant and important in the context of contemporary challenges facing humanity. The style of the authors is distinguished by scientific rigor, but at the same time the availability of presentation, which allows the reader to easily assimilate complex concepts. Each section of the book is accompanied by illustrations and tables, which makes the material more visual and understandable. The team of authors includes experts in the field of chemistry, analytical chemistry and materials science, which guarantees high quality of the presented material. If you are looking for literature that will help you better understand the chemistry of rare elements and their significance in the modern world, then this book will be a real find for you. It will be useful to both professionals and students, as well as to anyone who is interested in new technologies and their impact on our lives. In search queries, you can use phrases such as “analysis of rare elements”, “lithium and beryllium in chemistry”, “rare earth elements in technology”, “analytical chemistry of rare elements” and many others. The book “Features of chemistry and analytical definition of rare elements” is not just a textbook, but a real encyclopedia of knowledge that will open up new horizons in the world of chemistry and technology.