The Development of the Periodic Table of Elements ARISTOTLE

The Development of the Periodic Table of Elements LAVOISIER acid-making elements gas-like elements metallic elements earthy elements sulphur light cobalt, mercury, tin lime (calcium oxide) phosphorus caloric (heat) copper, nickel, iron,  magnesia (magnesium oxide) charcoal (carbon) oxygen gold, lead, silver, zinc barytes (barium sulphate)   azote (nitrogen) manganese, tungsten argilla (aluminium oxide) hydrogen platina (platinum) silex (silicon dioxide)

The Development of the Periodic Table of Elements Jöns Jakob Berzelius Developed a table of atomic weights 1828. Introduced letters to symbolize elements.

The Development of the Periodic Table of Elements DoberEiner lithium, sodium and potassium (ii) calcium, strontium and barium (iii) chlorine, bromine and iodine

The Development of the Periodic Table of Elements NEwLands Newlands' Octaves 1864 H Li Ga B C N O F Na Mg Al Si P S Cl K Ca Cr Ti Mn Fe Co, Ni Cu Zn Y In As Se Br Rb Sr Ce, La Zr Di, Mo Ro, Ru Pd Ag Cd U Sn Sb Te I Cs Ba, V Ta W Nb Au Pt, Ir Tl Pb Th Hg Bi

The Development of the Periodic Table of Elements Mendeleev

The Development of the Periodic Table of Elements William Ramsay The Nobel Prize in Chemistry 1904 was awarded to Sir William Ramsay "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".

The Development of the Periodic Table of Elements Moseley With the discovery of isotopes of the elements, it became apparent that atomic weight was not the significant player in the periodic law When atoms were arranged according to increasing atomic number, the few problems with Mendeleev's periodic table had disappeared. Because of Moseley's work, the modern periodic table is based on the atomic numbers of the elements.

The Development of the Periodic Table of Elements Seaborg 1940 Won the 1951 Nobel Prize in Chemistry for "discoveries in the chemistry of the transuranium elements", contributed to the discovery and isolation of ten elements, and developed the actinide concept, which led to the current arrangement of the actinoid series in the periodic table of the elements.