This Encylopaedia provides a thorough and very readable text appropriate for a general sophomore level descriptive course in inorganic chemistry taken by chemistry, biology, and earth science students. Inorganic chemistry is an enormously broad area that encompasses the chemistry of all elements but carbon. While the subject is historically taught at the middle or senior level and has been largely devoted to more theoretical topics (such as crystal field theory). This Encyclopaedia focuses on the descriptive and introductory aspects of this fascinating sub-discipline. II is aimed for the students of postgraduate levels and also for researchers who intend to choose inorganic chemistry as their career.