 Hello everyone, this is an introductory video for the course on Nuclear and Radiochemistry which we propose to start in the next academic year that we will start from January 2023. Nuclear chemistry deals with the study of nuclear properties of elements using chemistry as a tool while radiochemistry deals with the study of chemical properties of elements using characteristic radiations emitted by their isotopes as a tool. The subject of nuclear and radiochemistry helps in understanding the nuclear and chemical properties of elements including athenites. This in turn helps in understanding the chemical phenomena associated with nuclear science and technology. Further, it will help the students in understanding the basic concepts behind the applications of radioisotopes in the adjacent technology in various fields such as chemistry, industry, healthcare, agriculture, food technology, water environment etc. As a part of this course the students will learn the fundamentals of radioactivity, nuclear decay, nuclear structure and stability, nuclear models, interaction of radiations with matter, radiation detection and measurement, nuclear reactions including fission, production of radioisotopes, radiochemical practices, nuclear endocrine techniques and chemistry of ethnics. The course will have 30 lectures of one hour each and will be a fundamental course, the foundation course for those pursuing MSc or PhD in chemistry or applied sciences including nuclear science and technology. The course will also be useful for those students who intend to work in the field of applications of radioisotopes and radiation technology in the healthcare, agriculture, food technology, industry, environment studies etc. Thank you very much.