Home
Class 12
CHEMISTRY
The correct order of E(M^(2+)//M)^(@) va...

The correct order of `E_(M^(2+)//M)^(@)` values with negative sign for the four successive elements Cr, Mn, Fe and Co is

A

`Cr gt Mn gt Fe gt Co`

B

`Mn gt Cr gt Fe gt Co`

C

`Cr gt Fe gt Mn gt Co`

D

`Fe gt Mn gt Cr gt Co`

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(Mn^2 // Mn)^(@) = -1.18 V , E_(Cr^(2+) // Cr)^(@) = -0.91 V`
`E_(Fe^(2+)//Fe)^(@) = - 0.44 V, E_(Co^(2+)//Co)^(@) = - 0.28 V`
`therefore` The correct order is `Mn gt Cr gt Fe gt Co`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THE d-AND f- BLOCK ELEMENTS

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|10 Videos

  • THE d-AND f- BLOCK ELEMENTS

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|10 Videos

  • SURFACE CHEMISTRY

    MTG GUIDE|Exercise AIMPT/NEET MCQS|11 Videos

  • THE p-BLOCK ELEMENTS (GROUP 15 TO 18)

    MTG GUIDE|Exercise CHECK YOUR NEET VITALS|14 Videos

Similar Questions

Explore conceptually related problems

{:(E_(M^(2+)//M)^(@),Cr,Mn, Fe, Co, Ni, Cu),(,-0.91,-1.18,-0.44,-0.28,-0.25,+0.34):} From the given data of E^(@) values, answer the following questions : (i) Why is E_((Cu^(2+)//Cu))^(@) value exceptionally positive ? (ii) Why is E_((M^(2+)//M))^(@) vlue highly negative as compared to other elements ? (iii) Which is a stronger reducing agent , Cr^(2+) or Fe^(2+) ? Give reason.

Discuss the relative stability in aqueous solution of +2 oxidation states among the elements: Cr, Mn, Fe and Co

Knowledge Check

  • The correct order of E_(M^(2+)//M)^(o) values with negative sign for the four successive elements Cr,Mn,Fe and Co is

    A
    CrgtMngtFegtCo
    B
    MngtCrgtFegtCo
    C
    CrgtFegtMngtCo
    D
    FegtMngtCrgtCo

  • The correct order of E _(m^(2+)//M)^(@) values of which gnegative sign for the four sucessive elements Cr, Mn, Fe and Co is

    A
    `Mn gt Cr gt Fe gt Co`
    B
    `Cr gt Fe gt Mn gt Co`
    C
    `Fe gt Mn gt Cr gt Co`
    D
    `Cr gt Mn gt Fegt Co`

  • The correct order of E_(M^(+2)//M)^(@) value with negative sign for the four successive element Mn,Fe, Co and Ni

    A
    `MngtFegtCogtNi`
    B
    `NIgtCogtMngtFe`
    C
    `CogtFegtMngtNi`
    D
    `MngtCogtNigtFe`

    • Similar Questions

    Explore conceptually related problems

    Give the decreasing order of E_((M^(3+))/(M^(2+))^(c-) Value for the following: (a). Co(Z=27) (b). Mn(Z=25) (c). Fe(Z=26) (d). Cr(Z=24)

    Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

    Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

    Correct order of paramagnetism of tripositive cation of Cr, Mn, Fe, Co is :

    The correct order of decreasing third ionisation enthalpy of Ti, V, Cr, Mn is :

    Home
    Profile