Electron Affinity

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  • Created by: Jasmin
  • Created on: 02-11-13 14:48
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  • Electron Affinity
    • 1st E.A of an element is the energy change when 1 electron is added to each atom in 1 mole of gaseous atoms
    • 2nd E.A of an element is the energy change when 1 electron is added to each ion in 1 mole of slightly charged gaseous ions
      • Endothermic +ve number
        • Incoming electron is repelled by the negative ions
          • Therefore energy has to be supplied to bring the ion and electron together
    • Fluorine is so small so there is repulsion as electrons are so close together therefore it is hard for electrons to be filled in
    • Electron shielding
    • Repuslion

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