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Biology Topic 6 (Noble Gases (Located in group 0 (As you go down the…

- - - - Makes it difficult for them to gain, lose or share electrons.
      - They have stable electronic configuration so they are unreactive.
  - - - Helium - Low density and is non-flammable. Used to fill weather balloons and airships.
      - Neon gives a red-orange light when electricity is passed through, used for advertising
      - Argon is used for lamps because it's inflammable and is inert.
- - - - As you go down group 7 it becomes more difficult for the atoms to form a negative ion because the atom sizes get bigger as you go down. Because of this, the attraction between the nucleus and the incoming electrons decreases, making it harder to capture the electron.