Given `E_(Cl_(2)//Cl^(-))^(@)=1.36V,E_(Cr^(3+)//Cr)^(@)=-0.74V`
`E_("Cr_(2)O_(7)^(2-)//Cr^(3+))^(@)=1.33V,E_(MnO_(4)^(-)//Mn^(2+))^(@)=1.51V`
Among the following, the strongest reducing agent is

Options

A. `Cr^(3+)`
B. `Cl^(-)`
C. `Cr `
D. `Mn^(2+)`

Answer

C

Explanation

More negative the `E^(@)` value of the species, more stronger is the reducing agent.
Since, `E_(Cr^(3+)//Cr)^(@)= -0.74V` (most negative among the given examples), Cr is the strongest reducing agent.