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Write chemical reaction for preparation ...

Write chemical reaction for preparation of K2Cr207 from chromite ore.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Explain, giving reasons, which one of the following pairs exhibits the...

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  2. Explain, giving reasons, which one of the following pairs exhibits the...

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

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  4. Why is Copper considered as transition metal ?

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  5. Calculate the number of unpaired electrons in the following gaseous io...

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  6. State what happens when a solid mixture of KCl and K2Cr2O7 is heated w...

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  7. To what extent do the electronic configurations decide the stability o...

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  8. Why are Mn^(2+) compounds more stable than Fe^(2+) compounds towards o...

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  9. Write the name of metal which shows only +3 oxidation state.

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  10. What is lanthanoid contraction ?

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  11. Give the general electronic configuration of d-block elements.

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  12. Out of Fe^(2+) and Fe^(3+) which is more paramagnetic and why ?

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  13. What is Actinoid contraction ? Explain it.

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  14. What arecoinage metals ?

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  15. What are transition elements ? Which of the d block elements are not r...

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  16. Most of transition metals show variable oxidation states. Explain

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  17. Give the cause of Lanthanide Contraction.

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  18. What is Misch metal ?

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  19. What is Lanthanide contraction ? What is the cause and consequences of...

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  20. Write two similarities between Lanthanides and Actinides. La(OH)3 is m...

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