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1904 BCE
William Ramsay discover noble Gases
A British physical chemist who discovered the four following gases; neon, argon, krypton, and xenon -
1869 BCE
Julius Lothar Meyer
Published a periodic table. -
1733 BCE
Joseph Priestly discover Oxygen
In 1774 he conducted an experiment to generate oxygen from heating reddish mercury oxide and found the new air was many times as good as common air. -
450 BCE
Empedocles
He stated a theory; All matter is made up of differing proportions, of four elemental substances. -
Robert Boyle
The major gas developer who discovered that the volume of a gas decreases with increasing pressure and vice versa -
Dmitri Ivanovich Mendeleev
Created the Periodic Law and a farsighted version of the Periodic Table of Elements.
