Answer:
[tex]Pd^{2+}[/tex] is the strongest oxidizing agent .
Explanation:
It is said in the question that given reactions are spontaneous.
As [tex]Np^{3+}[/tex] oxidizes Ce to [tex]Ce^{3+}[/tex] we can say that [tex]Np^{3+}[/tex] is a stronger oxidizing agent than [tex]Ce^{3+}[/tex].
Similarly , [tex]Cd^{2+}[/tex] is stronger than [tex]Np^{3+}[/tex] (from first reaction).
From second reaction we can see that [tex]Pd^{2+}[/tex] is stronger than [tex]Cd^{2+}[/tex].
The order of oxidizing strength is [tex]Pd^{2+}[/tex] > [tex]Cd^{2+}[/tex] > [tex]Np^{3+}[/tex] > [tex]Ce^{3+}[/tex] .
