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Explain the following: Co (II) is stable...

Explain the following: Co (II) is stable in aquous solution but in the presence of the complexing agents, it is easily oxidised.

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R G PUBLICATION-THE d-AND f-BLOCK ELEMENTS-EXERCISE
  1. Explain the following: The oxidizing power of oxoanions are in the ord...

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  2. Explain the following: The colour of potassium dichromate

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  3. What happens when: Copper sulphate reacts with potassium iodide

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  4. What happens when: Potassium permanganate is heated to 513K

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  5. What happens when: What happens when: Oxalic acid react with KMnO4 in ...

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  6. What happens when: KMnO4 reacts with KI in basic medium.

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  7. What happens when: Manganous salt oxidised by KMnO4 in presence of ZnO...

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  8. Why is the highest oxidation state of a metal exhibited in its oxide o...

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  9. How would you account for irregular variation of 1st and 2nd ionisatio...

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  10. In the first transition series of elements, which element shows highes...

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  11. Which transition metal of 3d series has positive E^@ (M^(2+)//M) value...

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  12. Write the electronic configuration of Ce^(3+) ion, and calculate the m...

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  13. Explain the following: Co (II) is stable in aquous solution but in the...

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  14. The colour of potassium dichromate solution changes with the change of...

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  15. Which matal in the first series of transition metal exhibite +1 oxidat...

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  16. Mention one factor in favour of presence of matal-matal bonding in com...

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  17. In p-block elements the lower oxidation state is favoured by heavier e...

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  18. What are interstitial compounds? Mention principla physical and chemic...

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  19. A blackish brown coloured solid 'A' when fused with alkali metal hydro...

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  20. What happens when a acidic solution of the green compound 'B' is allow...

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