chemistry notes

  • Created by: hollyjxne
  • Created on: 24-05-18 20:55
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  • Chemistry
    • period = down groups = across
      • Period 1 = fills 1s orbital
    • Atomic radius
      • decreases across period (left to right)
      • As you go down the group atomic radii increases
    • Electro- negativity
      • Measure of tendency of an atom to attract a bonding pair of electrons
      • increases as you go across a period
      • Decreases as you go down a group
      • Depends on
        • Number of protons in nucleus
        • distance from the nucleus of the bonding pair of electrons
        • How much shielding there is from inner electrons
    • Takes more energy to remove an electron as you go across the period


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