* Electronegativity: Fluorine is the most electronegative element on the periodic table, while lead is a metal with relatively low electronegativity. This large difference in electronegativity leads to a transfer of electrons, rather than sharing.

* Ionic Character: Fluorine has a strong tendency to gain one electron to achieve a stable octet configuration. Lead, on the other hand, readily loses electrons to achieve a stable configuration. This transfer of electrons results in the formation of oppositely charged ions: a negatively charged fluoride ion (F-) and a positively charged lead ion (Pb2+ or Pb4+ depending on the compound).

* Electrostatic Attraction: The oppositely charged ions are then attracted to each other by electrostatic forces, forming an ionic bond.

Therefore, the compound formed between fluorine and lead is an ionic compound, such as lead(II) fluoride (PbF2) or lead(IV) fluoride (PbF4).