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Dark Ages (historiography), the concept of a period of intellectual darkness and economic regression that occurred in Europe following the collapse of the Western Roman Empire
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After the fall of the Roman Empire, the focus of alchemical development moved to the Islamic World. Much more is known about Islamic alchemy because it was better documented: indeed, most of the earlier writings that have come down through the years were preserved as Arabic
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The alchemical laboratory—because it had the power to separate precious metals from the baser ones they are typically found with—became an essential feature of the metallurgical enterprise. As the science of matter, alchemy had a wide range of applicability: from the chemical analysis and separation of alloys, to the preparation of powerful corrosives, to the distillation of spirituous essences and delicate oils, to the manufacture of dyes, to the preparation of powerful new medicines.
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by H.Brand
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by D.Rutherford
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by J.Black
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by H.Cavendish
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by C.W.Scheele
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by C.W.Scheele
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by L.N.Vauquelin
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by H.Davy
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by J.L.Gay-Lussac & L.J.Thénard
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by J.A.Arfwedson
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by J.J.Berzelius
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by H.C.Ørsted That weird Ø sign is O in English but this is how u write e nam)
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chlorine, bromine, and iodine
calcium, strontium, and barium
sulfur, selenium, and tellurium
lithium, sodium, and potassium -
by P.Janssen & J.N.Lockyer
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by H.Moissan
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by Lord Rayleigh & W.Ramsay
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He came up with the idea of the atom model
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by W.Ramsay & M.W.Travers
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He organized the electrons into shells(orbitals)
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He suggested how to make new elements with atoms larger than the heaviestnaturally occuring atoms of uranium(atomic number 92)
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When the nuclear bombs hit Japan a new element was discoverd.Element 93
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The new elements 94 to 101
