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State what happens when a solid mixture ...

State what happens when a solid mixture of KCl and `K_2Cr_2O_7` is heated with conc. sulphuric acid. Give balanced chemical equation.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Why is Cu considered to be a transition element and Zn not ?

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  2. Explain the following observation : Cu^+ ion is not known in aqueous s...

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

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  4. Name the element showing maximum number of oxidation states among the ...

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  5. Explain the following observation giving an appropriate reason : Mn^(2...

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

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  7. What is lanthanoid contraction ?

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

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

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  10. What is Actinoid contraction ? Explain it.

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  11. What arecoinage metals ?

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

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

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  14. Give the cause of Lanthanide Contraction.

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  15. What is Misch metal ?

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

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  17. La(OH)3 is more basic than Lu(OH)3. Explain.

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  18. Answer the following: Aqueous solution of Ti^(4+) is colourless, but a...

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  19. Answer the following: Copper (I) has d^10 configuration while copper (...

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  20. What are lanthanoids ?

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