Strutt, John

Strutt, John William. Life of John William Strutt, Third Baron Raleigh. The University of Wisconsin Press, Madison. 1968. 

The principal isotope of argon is °Ar (99.6% abundance) it has two other stable isotopes, Ar (0.3%) and Ar (0.1%). Argon-40 is formed by jS-decay of the long-lived potassium isotope see also Noble Gases Ramsay, William Strutt, John. 

In 1962 the first chemical noble gas compound, formulated as XePtFg, was synthesized by Neil Bartlett. This result spurred intense research activity and led to the discovery of numerous xenon and krypton compounds. In 2000 the formation of the first argon compound, argon fluorohydride (HArF), was reported by Leonid Khriachtchev and colleagues, see also Argon Cavendish, Henry Helium Krypton Neon Ramsay, William Ruthereord, Ernest Soddy, Frederick Strutt, John Xenon. 

In 1904 Ramsay received the Nobel Prize in chemistry in recognition of his services in the discovery of the inert gaseous elements in air, and his determination of their place in the periodic system, becoming the first British recipient of this award, see also Argon Cleve, Per Theodor Strutt, John (Lord Rayleigh). 

Strutt, John William (Lord Rayleigh) was born 12 November 1842 and died 30 June 1919. He won the Nobel Prize in Physics in 1904 for discovering Ar and succeeded James Clerk Maxwell as the Cavendish Professor in Cambridge. 

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