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Explain the following observation giving...

Explain the following observation giving an appropriate reason : `Mn^(2+)` is much more resistant than `Fe^(2+)` towards oxidation.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. State what happens when a solid mixture of KCl and K2Cr2O7 is heated w...

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

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

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

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  5. What is lanthanoid contraction ?

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

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

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  8. What is Actinoid contraction ? Explain it.

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  9. What arecoinage metals ?

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

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

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  12. Give the cause of Lanthanide Contraction.

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  13. What is Misch metal ?

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

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

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

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

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  18. What are lanthanoids ?

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  19. Give the chemical equation for the reaction between a saturated soluti...

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  20. A mixed oxide of iron and chromium, FeO.Cr2O3 is fused with sodium car...

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