consists: of equal and opposite electric charges
and
separated by a distance
[P3.3]
can be found: in molecules containing a variety of atoms, where the electrons forming the bonds between atoms of different chemical elements are not shared equally between the two atoms involved. The result is equivalent to a dipole, in which one atom has a slight positive charge and the other a slight negative charge. [P3.3]
See electric dipole moment. [P3.3]
Copyright 1997, The Open University