Nuclear reactors are complex systems designed to harness the immense energy released from nuclear fission. Among the various types of nuclear reactors, those that use sodium as a coolant are particularly interesting due to the unique properties and advantages sodium offers. This article explores the role of sodium in nuclear reactors, focusing on its functions, benefits, and challenges. Introduction to Nuclear Reactors Nuclear reactors are devices used to initiate and control a sustained nuclear chain reaction. They are primarily used for generating electricity, although they also have applications in research, medicine, and the production of isotopes. Reactors are broadly classified…