Answer using the follwing data and find out the most stable ion in its reduced form.

EoCl2/Cl- = 1.36V

EoCr3+ /Cr=- 0.74V

EoCrO72-/Cr3+ = 1.33V

EoMnO4- /Mn2+ = 1.51V 

1
Cl 
2
Cr3+
3
Cr
4
Mn2+

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