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100
Discovery of Silver (Ag)
Known since ancient times -
100
Discovery of Tin (Sn)
Known since ancient times -
400
Alchemy in Greco-Roman Egypt
The first references to true alchemy, with its idea of transmutation seems to be from the third and fourth century A.D. Greco-Roman Egypt. -
Sep 14, 1144
Alchemy in Medieval Europe
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Discovery of the Element Phosphorus
Hening Brnad, German alchemist -
Period: to
Discovery of 60 Elements
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Definiton of Element
1661 Boyle defined an element as a substance that cannot be broken down into a simpler substance by a chemical reaction -
Discovery of Cobolt
Cobalt was discovered by Georg Brandt, a Swedish chemist, in 1739. -
Discovery of Nickel
Nickel was discovered by the Swedish chemist Axel Fredrik Cronstedt in the mineral niccolite (NiAs) in 1751. -
Discovery of Magnesium
Magnesium was discovered by Sir Humphrey Davy at 1755 in England -
Discovery of Hydrogen
Henry Cavendish -
Discovery of Fluorine
Carl Wilhelm Scheele discovered fluorine and Henri Moissan (1866)found a way to isolate it, 15 years after it’s initial discovery. -
Discovery of Nitrogen
Daniel Rutherford discovered nitrogen in 1772 and called it noxious gas or fixed air -
Discovery of Oxygen
Oxygen was discovered in 1774 by Joseph Priestley in England. Joseph Priestley and Carl Wilhelm Scheele both independently discovered oxygen, but Priestly is usually given credit for the discovery as he published earlier. -
Discovery of Chlorin
Carl William Scheele at 1774 in Sweden -
Discovery of Molybdenum (Mo)
Carl Welhelm Scheele -
Discovery of Chromium
Chromium was discovered in 1780 by French chemist Nicolas Louis Vauquelin in Paris. -
Discovery of Yttrium
Johan Gadolin -
Discovery of Zirconium (Zr)
Martin Heinrich Klaproth -
Recognition of carbon as element
Antoine Lavoisier's pioneering chemistry textbook Traité Élémentaire de Chimie, published in Paris in 1789, lists carbon as an "oxidizable and acidifiable nonmetallic element" Carbon is known since ancient times. -
Discovery of Strontium
Adair Crawford -
Discovery of Titanium
Titanium was discovered by William Gregor at 1791 in England. -
Discovery of Beryllium
Beryllium was discovered by Nicholas Louis Vauquelin in 1797 -
Discovery of Vanadium
Vanadium was discovered in 1801 by the Spanish scientist Andres Manuel del Rio. -
Discovery of Niobium (Nb)
Charles Hatchett -
Discovery of Tantalum
Anders Gustaf Ekenberg -
Discovery of Rhodium (Rh)
William Hyde Wollaston -
Discovery of Palladium (Pd)
William Hyde Wollaston -
Discovery of Sodium
The discovery of sodium is attributed to a British scientist named Humphry Davy in 1806 -
Discovery of Potassium
Potassium was discovered by Sir Humphrey Davy at 1807 in England -
Discovery of Boron
Joseph Louis Gay-Lussac and Louis Jacques Thénard (30 June 1808) -
Discovery of Calcium
Calcium was discovered by Sir Humphrey Davy at 1808 in England -
Discovery of Lithium
Lithium was discovered by Johan Arfvedson in 1817 in Stockholm, Sweden -
Discovery of Selenium
Jöns Jacob Berzelius 1817 -
Discovery of Cadmium (Cd)
Friedrich Strohmeyer -
Discovery of the Element Silicon
Jons Jacob Berzelius 1824 (Sweden) -
Discovery of Aluminium
Aluminium was discovered by Hans Christian Oersted at 1825 in Denmark. -
Discovery of Bromine
Antoine-Jérôme Balard 1826 -
Discovery of Ruthenium (Re)
Karl Karlovich Klaus -
Discovery of Rubidium
Robert Bunsen
Gustav Kirchhof -
Discovery of Indium (In)
Ferdinand Reich
Hieronymus Theodor Richter -
Discovery of Helium
Pierre Janssen was a French astronomer who discovered helium in 1868 -
Publish first periodic table - Dimitri Mendeleev
Dmitri Mendeleev, a Russian chemist, was the first scientist to make a periodic table much like the one we use today -
Discovery of Gallium
Paul-Émile Lecoq de Boisbaudran 1875 -
Discovery of Scandium
Scandium was discovered by Lars F. Nilson in 1879, in Uppsala, Sweden -
Discovery of Germanium
Clemens Winkler 1886 -
Discovery of Argon
Argon was discovered by Sir William Ramsay, Lord Rayleigh at 1894 in Scotland -
Discovery of Neon
Neon was discovered in 1898 by William Ramsay and Morris Travers at University College London -
Discovery of Krypton
Sir William Ramsay
Morris M. Travers 1898 -
Discovery of Technetium
Carlo Perrier
Emilio Segrè -
Discovery of Neptunium
In 1940, Glenn Seaborg artificially produced heavy mass elements such as neptunium. These new elements were part of a new block of the periodic table called ‘actinides’. -
Alchemy in the Islamic world
Jābir ibn Hayyān (known as "Geber" in Europe) introduced a new approach to alchemy, based on scientific methodology and controlled experimentation in the laboratory, which is considered the start of chemstry.