Computational chemistry is a sub-field of chemistry which aims at solving problems of chemical nature by using computer programs. It calculates molecular structure and properties by integrating methods of theoretical chemistry and computer programs. Some of the methods used in this field are ab initio methods, chemical and molecular dynamics, density functional methods, etc. This book elucidates the concepts and innovative models around prospective developments with respect to computational chemistry. It is a compilation of chapters that discuss the most vital concepts in this field. For all those who are interested in this subject, this textbook can prove to be an essential guide.