Atomic physics is a sub-branch of physics which deals with the study of atoms, their nucleus and the electrons surrounding it. It is used to expand fields like nuclear weapons and nuclear power. Similarly, molecular physics refers to the study of molecular dynamics, the characteristics of molecules and also the chemical bonds between atoms. The other fields which use the elements of atomic and molecular physics are chemical physics, theoretical chemistry, physical chemistry, etc. This book aims to shed light on some of the unexplored aspects of the physics of atoms and molecules. Some of the diverse topics covered in it address the varied branches that fall under this category. This book is appropriate for those seeking detailed information in this area.