Noble gas noble gases show extremely low chemical reactivity; consequently, only a few hundred noble gas compounds have been formed. Neutral compounds in which helium and neon are involved in chemical bonds have not been formed (although there is some theoretical evidence for a few helium compounds), while xenon, krypton, and argon have shown only minor reactivity. The reactivity follows the order Ne < He < Ar < Kr < Xe < Rn. In 1933, Linus Pauling predicted that the heavier noble gases could form compounds with fluorine and oxygen. He predicted the existence of krypton hexafluoride () and xenon hexafluoride (),
The More Abundant Life I am come that they might have life, and that they might have it more abundantly." Roosevelt, an Episcopalian, would also have been familiar with a similar phrase used in the collect for the Fifth Sunday after the Epiphany in the "Book of Common Prayer". The More Abundant Life The More Abundant Life was a phrase of scriptural flavor used by the U.S. President Franklin D. Roosevelt in his address before the Inter-American Conference for the Maintenance of Peace in Buenos Aires, Argentina, December 1, 1936, to signify the improved living conditions and enlarged cultural and economic opportunities available to