Dipole moments u=4.8X8x d, where 8 is the charge (proportional to AEN) and d is the distance (bond length)in Angstroms Electronegativities F>cl>Br> Bond lengths: C-F<C-Cl <C-Br<C-1 Bond dipoles: C-Cl>C-F>C-Br>C-1 1.56D1.51D1.48D129D Molecular dipoles depend on shape, too! => Chapter 6Chapter 6 11 Dipole Moments • m = 4.8 x  x d, where  is the charge (proportional to DEN) and d is the distance (bond length) in Angstroms. • Electronegativities: F > Cl > Br > I • Bond lengths: C-F < C-Cl < C-Br < C-I • Bond dipoles: C-Cl > C-F > C-Br > C-I 1.56 D 1.51 D 1.48 D 1.29 D • Molecular dipoles depend on shape, too! =>