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Science Intermolecular Forces (London Dispersion Forces (Electron…
Science
Intermolecular Forces
London Dispersion Forces
Temporary dipole - induced dipole
Relatively week
Present between
non-polar
covalent molecules
Electron distribution
Non-Symmetrical
One end slightly posotive
One end slightly negative
Temporary Di-pole
Can
induce
nearby molecules due to polarity of current molecule
Attract each other (pull together)
Caused by Electrons just moving around - chance for uneven Electron distribution
Dipole-Dipole Forces
Permenant forces
Polar molecules
Permenant Posotive end
Permenant Negative End
Oppositely charged ends attract each other
Stronger than Longon-Disperson forces
Weak versus covalent bond
Van der walls forces
Name for all types of Intermolecular forces
Hydrogen bonding
Strongest
10% of a Covalent bond
Special type of dipole-dipole
Formed when Hydrogen directly bonded to Fluorine, Oxygen or Nitrogen
Forms lone pair of electrons
#
Attraction between lone pair of electrons and slightly positive ends of the other molcules (that are the same)
