41. Similarly, the polyatomic nonmetals, diatomic nonmetals and the noble gases are nonmetals viewed in the broader sense. 42. Especially the causes of hard sphere repulsion, postulated by liquefaction of noble gases were difficult to understand. 43. These two noble gases do not condense above that of liquid nitrogen and cannot be loaded cryogenically. 44. Figure 2 shows the Maxwell Boltzmann distribution for the speeds of the atoms in four noble gases . 45. Of keenest interest : oxygen, nitrogen and the noble gases , such as neon, argon, xenon and krypton. 46. She spent much of her career studying the noble gases and their properties, successfully synthesizing krypton difluoride. 47. Noble gasses are particularly useful for these experiments because they are easy to handle, unreactive and relatively inexpensive.48. Q . Judging from the childhood experiments you describe, you were also entranced with the so-called noble gases . 49. Noble gases themselves are chemically inactive.50. Other noble gases would be equally suitable for most of these applications, but argon is by far the cheapest.
