is BiF ₅ MOLECIULE STABLE OR NOT .EXPLAIN WHY?

BiF₅ is a stable molecule. For Bi, the +3 oxidation state is more stable than +5 oxidation state due to inert pair effect. Thus, compounds of Bi in +5 oxidation state will not be stable. However, since fluorine is the most electronegative element in the periodic table, therefore it can stabilise Bi⁺⁵ ion. Thus, BiF₅ is a stable compound.