Question

Bi2O5 or BiCl5 or Bi^+5 is better oxidising agent than Bi^+3 or Sb^+3 or Sb^+5. Why?

Answer 1

INERT pair is the effect in which due to poor sheilding of electron pair ..most of the element do not react this is called inert pair effect..
In this bi2o5 and other two have +5 oxidaton stae and bi have + 3 ..on incresing oxidatin state ..oxidising power is increses..