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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

MngtCrgtFegtCo

B

CrgtFegtMngtCo

C

FegtMngtCrgtCo

D

CrgtMngtFegtCo

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The correct Answer is:
A
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{:(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

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)

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

RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 3
  1. In context with the transition elements, which of the following statem...

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  2. Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 ...

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  3. The correct order of E(M^(2+)//M)^(@) Values with negative sign for th...

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  4. In context of the lanthanoids, which of the following statements is no...

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  5. The outer electrons configuration of Lu (Atomic No.,71) is :

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  6. Iron exhibits +2 and +3 oxidation states. Which of the following state...

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  7. Which one of the following arrangements does not represent the correct...

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  8. Four successive members of the first row transition elements are liste...

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  9. Which series of reactions correctly represents chemical rections relat...

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  10. The equation which is balanced and represents the correct product(s) i...

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  11. Match the catalysts to the correct processes :

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  12. The colour of KMnO(4) is due to

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  13. Chloro compound of vanadium has only spin magnetic moment of 1.73 BM. ...

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  14. Which one of the following exhibits the largest number of oxidation st...

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  15. Copper becomes green when exposed to moist air for a long period. This...

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  16. Which of the following statements is false?

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  17. Which one of the following species is stable in aqueous solution?

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  18. The transition metal ions responsible for color in ruby and emerald ar...

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  19. The pair of compounds having metals in their highest oxidation state i...

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  20. When XO(2) is fused with an alkali metal hydroxide in presence of an o...

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