Limits of Partial Charges in Dipoles

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In the discussion, the focus is on the nature of partial charges in dipoles, particularly in the context of double and triple bonds. It is emphasized that partial charges are always less than the unit electronic charge (1.6×10−19 C), which raises the question of whether electronegative atoms can pull shared electron clouds to create charges exceeding this limit. The consensus is that this is not possible because anions, despite their electronegativity, cannot exert enough influence to surpass the unit charge. The concept of zwitterions is mentioned, likely to illustrate the behavior of charged species, but the primary argument centers on the limitations of charge distribution in covalent bonding scenarios.
tbn032
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In my book it is written "Ends of dipole possesses partial charges. Partial charges are always less than the unit electronic charge (1.6×10−19 C)".
Suppose in a double bond(two electron is shared by each atom) or triple bond(three electrons are shared by each atom), can the electronegative atom pull the shared electron cloud to the extent that the charges at the end of the dipole exceed 1.6×10−19 C.why is that not possible? Is it because the anions are not electronegative to that extent, hence they cannot pull the electron cloud to the extent that the charges at the end of the dipole exceed 1.6×10−19 C?
 
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