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The Periodic Table, Bibliography:, By: - Coggle Diagram

- - - - They dictate how elements behave
      - All elements in a group have similiar reactions
- - - - They react vigorously with water and leave solutions of their hydroxide
    - - They burst into flame and form chlorides
    - - They burst into flame too and form oxides
    - - They only need to lose one electron, thus making them propitious to reactions
- - - - Because they only need one more electron to become stable, they are very reactive
        
        With metal atoms they accept electrons
        
        With non-metals, they share electrons
        
        When a halogen reacts with a halide, the halogen will displace a less reactive halogen from a solution of its halide
- - - - Because their atoms already have a stable outer electron shell
  - - - There is increasing attraction between atoms
- - - - Hard transitions metals such as iron, are used in construction structures
      - Many are used for making alloys such as stainless steal
      - Some are used as heat and electricity conductors such as steel for radiators
      - Many act with their compounds as catalysts to speed up reactions
  - - - This shows variable valency