On the basis of the following E ^ values, the strongest oxidizing agent is array ll [ Fe ( CN )_ ]⁴⁻ [ Fe ( CN )_ ]³⁻+ e ⁻¹ ; & E ^0=-0.35 ~V Fe ²⁺ Fe ³⁺+ e ⁻¹ ; & E ^0=-0.77 ~V array

Step-by-step solution

For the strongest oxidizing agent, the oxidizing potential should be least. Here, the oxidizing potential of Fe ⁺² is less than that of [ Fe ( CN )₆ ]⁴⁻ . Therefore, Fe ⁺² is stronger oxidizing agent than [ Fe ( CN )₆ ]⁴⁻ . Also, the stronger oxidizing agent should easily reduce itself. Here, Fe ⁺³ is easily reduced than Fe ⁺² . Therefore, among all the four, Fe ⁺³ is the stronger oxidizing agent.