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Show by balanced chemical equation what happens when `MnO_2` is fused with KOH in the presence of air.

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ASSAM ACADEMIC CENTRE-The d and f-block elements-Example
  1. Name a transition element which does not exhibit variable oxidation st...

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  2. Show by balanced chemical equation what happens when MnO2 is fused wit...

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  3. Draw the structure of chromate and dichromate ion.

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  4. Which is a stronger reducing agents Cr^(2+) or Fe^(2+) and why?

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  5. Silver atom has complete filled d-orbitals (4d^(10)) in its ground sta...

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

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  7. Transition metel compounds are generally coloured. Why?

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  8. Draw the structure of Potassium dichromate (K2Cr2O7).

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  9. Draw the tetrahedral structure of permanganate ion MnO4^(-).

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  10. Write down the electronic configuration of each of the following ions....

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  11. Account for the folloiwng: Mn^(2+) is more stable than Fe^(2+) towards...

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  12. What are lanthanoids?

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

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  14. What are inner transition elements.

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  15. What are transition elements? Give the general electronic configuratio...

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

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  17. Write three general chracteristics of transition elements.

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  18. Write the electronic configuration of the element with atomic number 1...

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  19. What are transition elements? Give the general electronic configuratio...

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  20. What are transition elements? Give the general electronic configuratio...

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