Group 18

This chapter covers the nonradioactive elements of Group 18 (He to Xe), now called the noble gases. Many properties of these elements are tabulated. The coverage includes the natural sources and preparations of these elements, their structures, properties, and uses. The properties of the fluorides of Xe and Kr, the oxides and oxoanions of Xe, and the oxofluorides of Xe are described. The coverage of these topics includes references published through to mid-2021.