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Give an explanation for the following ob...

Give an explanation for the following observation : The greatest number of oxidation states are exhibited by the members in the middle of a transition series.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Why are f-block elements placed at the bottom of the periodic table ? ...

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  2. Actinoid contraction is greater from element to element than lanthanoi...

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  3. Give an explanation for the following observation : The greatest numbe...

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  4. Give an explanation for the following observation : With the same d-or...

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  5. Explain the following observation : In general, the atomic radii of tr...

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  6. The E(M^(2+) // M)^@ for copper is positive (0.34 V). Copper is the on...

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  7. The questions given below consist of an Assertion and a Reason. Use th...

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  8. Which one of the following ions will exhibit colour in aqueous solutio...

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  9. Express 1380 in roman numbers.

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  10. Draw lewis structure of hydronium ion .

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  11. Write chemical reaction for preparation of K2Cr207 from chromite ore.

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  12. Write the oxidation of H2S by acidified KMnO4.

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  13. Write the oxidation of H2S by acidified KMnO4.

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  14. What are lanthanoids ?

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  15. Why transition metals show catalytic properties?

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  16. How would you account for the following: The d1 configuration is very ...

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  17. How would you account for the following : SF(6) is kinetically inert...

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

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  19. Give reasons for the following : Copper cannot displace zinc from it...

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  20. Why the actinoids exhibit a large number of oxidation states than the ...

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