2. Bonding moments. Dipole moments of molecules
When two bonded atoms have different electronegativities (see article Properties of the elements ), the more electronegative atom carries a negative partial charge and the other atom an equal but positive partial charge, hence the existence of a dipole moment carried by the bond, called the bonding moment. This parameter defines the partial ionic character of a covalent bond.
The partial ionic character is the ratio (expressed as a %) of the actual dipole moment µ (bonding moment) to the dipole moment µ i that would be observed if the electron were totally transferred to the most electronegative atom.
We would then be dealing with an ionic bond and the atoms would carry the full charges + │e │ and - │e │, instead of the partial charges...
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Bonding moments. Dipole moments of molecules
Binding energies
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