The periodic table has all of the elements arranged into groups and periods based on their atomic numbers.

In this topic you need to know about the following: -

  • How Mendeleev arranged the first periodic table.
  • The location of metals, non-metals and key groups such as the Alkali metals, Halogens and Nobel gases on the periodic table.
  • How groups show trends in reactivity.

    • Use the arrows below to continue to revise.

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