Advertisements
Advertisements
प्रश्न
E0 value for Mn3+ Mn2+ couple is much more positive than that for Cr3-/ Cr2-.
Advertisements
उत्तर
Much larger 3rd ionisation energy of Mn (where the required change is d5 to d4) is mainly responsible for this.
Mn3+ = 
Mn2+ = 
→ Half filled (more stable)
APPEARS IN
संबंधित प्रश्न
Give an example and suggest a reason for the following feature of the transition metal chemistry:
A transition metal exhibits the highest oxidation state in oxides and fluorides.
Zinc carbonate is precipitated from zinc sulphate solution by the addition of ___________.
When \[\ce{Cu^2+}\] ion is treated with \[\ce{KI}\], a white precipitate is formed. Explain the reaction with the help of chemical equation.
Why \[\ce{HCl}\] should not be used for potassium permanganate titrations?
Complete the following ionic equation:
\[\ce{Cr2O^{2-}7 + 2OH^- ->}\]
Complete the reaction mentioning all the products formed:
\[\ce{Cr2O^{2-}7 + 3H2S + 8H^+ ->}\]
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chomite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
Indicate the steps in the preparation of \[\ce{K2Cr2O7}\] from chromite ore.
