periodic table

Cards (20)

  • Johan Wolfgang Dobereiner
    German chemist who formed the triads of elements with similar properties
  • John Newlands
    English chemist who proposed the Law of Octaves
  • Julius Lothar Meyer
    German chemist who arranged the elements in order of increasing atomic mass
  • Dmitri Ivanovich Mendeleev
    Russian chemist who arranged the elements in order of increasing atomic mass
  • Henry Moseley
    English physicist who found that the frequencies emitted by elements follows the ordering of the elements by atomic number
  • Modern Periodic Table Law states that the properties of elements vary periodically with atomic number
  • Groups
    Vertical columns of the periodic table, identify the principal families of elements (18 groups)
  • Periods
    Horizontal rows of the periodic table
  • Main Group of Representative Elements
    • Elements from taller columns (Groups 1,2 and 13-18)
  • Group 1 or Family IA
    • Alkali metals
  • Group 2 or Family A
    • Alkaline earth metals
  • Group 13
    • Boron Group
  • Group 14
    • Carbon Group
  • Group 15
    • Nitrogen Group
  • Group 16
    • Oxygen Group
  • Group 17 or Family VIIA
    • Halogens
  • Group 18
    • Noble or Inert gases
  • Transition Metals
    Group 3 to 12
  • Special series of Elements
    • Lanthanides - "rare-earth metals"
    • Actinides - radioactive elements
  • Classification of Elements
    • Metals - left side
    • Non-metals - right side
    • Semimetals or Metalloids - zigzag line