Given:Co3+ + e- → CO2+; E° = +1.81 VPb4+ + 2e- → Pb2+; E° = +1.67 VCe4+ + e- → Ce3+; E° = +1.61 VBi3+ + 3e- → Bi; E° = +0.20 VOxidizing power of the species will increase in the order:

Given:Co3+ + e- → CO2+; E° = +1.81 VPb4+ + 2e- → Pb2+; E° = +1

1.	Given:Co3+ + e- → CO2+; E° = +1.81 VPb4+ + 2e- → Pb2+; E° = +1.67 VCe4+ + e- → Ce3+; E° = +1.61 VBi3+ + 3e- → Bi; E° = +0.20 VOxidizing power of the species will increase in the order:
A.	Ce4+ < Pb4+ < Bi3+ < Co3+
B.	Bi3+ < Ce4+ < Pb4+ < Co3+
C.	Co3+ < Ce4+ < Bi3+< Pb4+
D.	Co3+< Pb4+ < Ce4+ < Bi3+
Answer» C. Co3+ < Ce4+ < Bi3+< Pb4+