five electrons have been remove from each atom to from iron out find the electrostatic force between two such iron when separated by distance of 4 unit
Answers
When an element loses electrons and becomes a cation with net positive charge, the full nuclear charge remains in force and can attract the remaining electrons more effectively
simply because there are fewer electrons and thus less electron-electron repulsion. Cations are smaller than their neutral counterparts just for this reason.
For anions, however, adding electrons increases electron electron repulsion without a compensating increase in
attraction to the nucleus. Anions are larger than their neutral counterparts as a result, and the increasing electron-electron repulsion makes it (a) difficult to stick a second extra electron onto a singly charged anion in the first place (the anion repels the second extra electron) and (b) unlikely that more than maybe two extra electrons will ever be stable when bound to any neutral atom.