As Chemistry Unit 1 Bonding

Quick overview of intermolecular and intramolecular forces needed in unit 1 as chemistry

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  • Created by: Sarah
  • Created on: 09-12-12 16:22
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  • Bonding
    • Intermolecular
      • Hydrogen Bonding
        • An intermolecular force between the lone pair on an electronegative atom (N, O or F) and a hydrogen atom bonded to such an electronegative atom
        • Strongest intermolecular force
        • E.g. H20 or HF
        • Forces that holds proteins in helix shape
      • Van Der Waals
        • Weakest of the intermolecular  forces
        • Temporary dipole-induced dipole attraction
      • Permanent-Permanent dipole
        • Molecules with permanent dipoles attract each other, e.g. HCl
    • Intramolecular
      • Covalent
        • A shared pair of electrons between two atoms
        • Coordinate bonding
          • When both electrons in  a shared electron pair originate from one atom (from a lone pair on th donor atom)
        • Polar covalent
          • When a covalent bond exists between atoms of differing electronegativity
      • Ionic
        • Electrostatic force of attraction between two oppositely charged ions
        • Conduct electricity when molten or in solution as ions are free to carry charge
      • Metallic
        • Electrostatic force between metal ions and delocalised electrons
        • High melting and boiling points - lots of energy needed to remove ion from delocalised electrons




wow its good, but it needs more detail

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