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Development of the Periodic table

By AnetaM

  • Robert Boyle discovered phosphorus

  • Hydrogen was discovered

    Hydrogen was discovered by Henry Cavendish in The United Kingdom.

  • Characteristics of Elements

    Scientists began to see characteristics as at least 47 elements were discovered.

  • Friedrick Stromeyer discovered Cadium.

    Friedrick Stromeyer discovered Cadium. The name came from the Latin name for the mineral calamine ‘Cadmia’

  • Elements arranged into groups

    English chemist John Newlands divided the 56 elements into 11 groups based on attributes

  • Antoine Bequerel discovered radioactivity.

  • Noble gases were discovered

    Noble gases were discovered by William Ramsay and Lord Rayleigh. Noble gases were added to the periodic table as group 0

  • Electrons were discovered by physicist J.J Thomson

  • Pierrie and Marie Curie discovered radium

  • Lutetium was discovered

    Urbain discovered Lutetium in Paris France in New Hampshire USA. The name came from from the Romans name for Paris ‘Lutetia’

  • English physicist Henry Moseley found a connection between

  • ames Chadwick discovered neutrons and he identified isotopes

  • The Neptunium element was discovered

    The Neptunium element was discovered by E.M McMillian and was named after the planet Neptune.

  • Lanthanide and Actinides were identified a

    Lanthanide and Actinides were identified and were given an atomic number of 92. They placed these elements below the periodic table.

  • Atomic weight

    John Newland arranged the known elements in order of atomic weights and similarities.

  • Developmennt

    Dimitri Mendeleev was a Russian chemist that started the development of the periodic table. He arranged the known elements by atomic mass and left free spaces for future discovered elements.