1. Mendeleyev And the development of the modern Periodic Table

9. John Dalton 1766 - 1844

11. Up to 1700 1700 - 1800 1800 - 1850 Gold Silver Copper Iron Lead Tin Mercury Sulphur Carbon

12. Up to 1700 1700 - 1800 1800 - 1850 Gold Silver Copper Iron Lead Tin Mercury Sulphur Carbon CobaltPlatinumNickelBismuthHydrogenNitrogenOxygen Chlorine Manganese Molybdenum Tungsten Tellurium UraniumStrontiumTitaniumYttrium Vanadium Chromium Beryllium

13. Up to 1700 1700 - 1800 1800 - 1850 Gold Silver Copper Iron Lead Tin Mercury Sulphur Carbon CobaltPlatinumNickelBismuthHydrogenNitrogenOxygen Chlorine Manganese Molybdenum Tungsten Tellurium UraniumStrontiumTitaniumYttrium Vanadium Chromium Beryllium Niobium Tantalum Cerium PalladiumRhodium Osmium Iridium SodiumPotassium Barium Calcium Magnesium Boron Iodine LithiumCadmiumSeleniumSiliconZirconiumAluminium Bromine Thorium LanthanumTerbiumErbiumRuthenium

14. JohannDobereiner (1780 - 1849)

18. StanislaoCannizzaro(1826–1910)

20. John Alexander Reina Newlands 1837 - 1898

21. H 1F 8Cl 15Co/Ni 22Br 29Pd 36I 42Pt/Ir 50 Li 2Na 9K 16Cu 23Rb 30Ag 37Cs 44Tl 53 Gl 3Mg 10Ca 17Zn 25Sr 31Cd 34Ba/V 45Pb 54 Bo 4Al 11Cr 18Y 24Ce/La 33U 40Ta 46Th 56 C 5Si 12Ti 19In 26Zr 32Sn 39W 47Hg 52 N 6P 13Mn 20As 27Di/Mo 34Sb 41Nb 48Bi 55 O 7S 14Fe 21Se 28Ro/Ru 35Te 43Au 49Os 51

24. Дми́трий Ива́нович Менделе́ев

25. DmitriIvanovichMendeleyev1834-1907

31. Paul-Emile Lecoq de Boisbaudran 1838 - 1912

33. Density of Gallium

34. Mendeleyev’s prediction for eka-aluminium 6.0g/cm 3

35. Density of Gallium Mendeleyev’s prediction for eka-aluminium 6.0g/cm 3 Boisbaudran's experimental estimate 4.9g/cm 3

36. Density of Gallium Mendeleyev’s prediction for eka-aluminium 6.0g/cm 3 Boisbaudran's experimental estimate 4.9g/cm 3 Accepted value today 5.9g/cm 3

51. Where does Hydrogen Go?