Looking for patterns in elements of life Essay

Looking for patterns in elements 59 of the 92 naturally occurring elements had been discovered by 1850. Much of the work of trying to search for patterns in the elements was done by Johann Dobereiner and Lother Meyer in Germany John Newlands in England Dimitri Mendeleev In Russia Mendeleev’s Groupings Group1 Group2 Group3 Group4 Group5 Group6 Group7 Group8 Period1 H Period2 Li Be B C N O F Period3 Na Mg Al Si P SCl Period4 K/Cu Ca/Zn / Ti/ V/As Cr/Se Mn/Br Fe,Co,Ni Period5 Rb/Ag Sr/Cd Y/In Zr/Sn Nb/Sb Mo/Te /I Ru,Rh,Pd. Indicates element yet to be discovered Mendeleevs groupings were seen as more credible than previous attempts to find patterns in element. Unlike newlands, mendeleev left gaps in his table. They allowed for the discovery of new elements. He predicted the properties of an element called eka-silicon. He predicted that the element would go between silicon and tin in his table. The element was discovered in 1886 and called germanium. Since mendellevs death in 1907:   8 elements have been discovered   24 elements have been made in the laboratory the modern periodic table is based on mendellevs original table. See: Assignment 3 Activity EL3. 1 Activity EL3. 2 Activity EL3. 3 Ideas 1. 2 Ideas 11. 1 Ideas11. 2.