Dipole Moment Calculator

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Choose the unknown. The other two fields become the inputs. p = q * d is rearranged automatically.
Magnitude of one of the two equal and opposite charges. Use e for elementary charge (1.602 x 10^-19 C).
Distance between the positive and negative charge centres. Angstrom (A) is handy for bond lengths.
Dipole momentStrongly polar
299,792,543,559,856,580,000,000,000,000D

Electric dipole moment in Debye

Dipole moment (SI)1C*m
299,792,543,559,856,580,000,000,000,000 D
Nonpolar / very slight<0.5Weakly polar0.5-1.5Moderately polar1.5-3Strongly polar3+

Dipole moment: 2.9979254355985658e+29 D

  • The dipole moment is 2.9979254355985658e+29 D (1.000e+0 C*m), which is strongly polar.
  • A larger dipole moment means a greater charge separation, which drives intermolecular forces like hydrogen bonding and dipole-dipole interactions.
  • In chemistry, bond dipole moments combine as vectors to give the molecular dipole moment. A molecule with polar bonds can still be nonpolar if its geometry is symmetric (for example, CO2).
  • Molecules with a dipole moment above 1 D are generally miscible with water and other polar solvents.

Next stepTo find the molecular dipole moment, sum all individual bond dipole vectors accounting for the 3-D geometry of the molecule.

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