Who invented helium and argon, and the other inert gases?
Helium and Argon and the other inert gases (and the other elements) are found in nature. They have been with us, in our universe, for billions of years. They are found in the stars. So I suppose their inventor would be God. Helium was discovered in 1868 by J. Norman Lockyear in the spectrum of a solar eclipse. Argon was discovered by William Ramsey and Rayleigh in an 1894 experiment in which they removed all of the oxygen and nitrogen from the air. Neon, Krypton and Xenon were discovered by William Ramsey and M. W. Travers when they were extracted from liquid air in 1898. I suggest you visit Periodic Table Research (http://140.198.18.108/periodic/periodic.html#search) for more information on the elements. There are many excellent links there, too.
