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Explain why [Ti (H2O)6]^(3+) is violet w...

Explain why `[Ti (H_2O)_6]^(3+)` is violet while `[Ti (H_2O)_6]^(4+)` is colourless.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. What happens when: KMnO4 is heated at 746 K ?

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  2. What happens when: K2Cr2O7 is heated ?

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  3. Explain why [Ti (H2O)6]^(3+) is violet while [Ti (H2O)6]^(4+) is colou...

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  4. Transition metals form alloys with other transition metals. Explain.

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  5. What are the main consequences of lanthanoid contraction ?

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  6. What happens when K2Cr2O7 reacts with NaCl in the presence of conc. H2...

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  7. What happens when Acidified KMnO4 reacts with H2S?

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  8. Explain why TiCl3 is coloured but TiCl4 is colourless ?

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  9. Why transition metals show catalytic properties?

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  10. Compare the chemistry of actinides with that of the lanthanides with...

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

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  12. Why transition elements form a large number of alloys ?

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

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  14. What are the main consequences of lanthanoid contraction ?

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  15. Why transition metals show catalytic properties?

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  16. Out of Ag^+ and Co^(2+) which one will be coloured and why? (Atomic nu...

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  17. Why is + 4 oxidation state of titanium more stable than its +3 state? ...

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  18. Is Zinc (At. No. 30) a transition element ?

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  19. Give the comparison of lanthanides and actinides.

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  20. Express 1368 in roman numbers.

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