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Name the element of 3d transition series...

Name the element of 3d transition series which shows maximum number of oxidation states. Why does it show so ?

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Account for the following : The enthalpy of atomization is lowest for ...

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  2. How would you account for the following: There is a greater range of o...

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  3. Name the element of 3d transition series which shows maximum number of...

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  4. Which transition metal of 3d series has positive E(M^(2+)|M)^(@) value...

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  5. Why Cr^(2+) is strongly reducing while Mn^(3+) is strongly oxidising ?

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  6. Name a member of the lanthanoid series which is well known to exhibit ...

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  7. Express 2120 in roman numbers.

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  8. Out of Cu^(2+) and Cu^(+) ion, which one is colourless and why?

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  9. What is lanthanoid contraction? Explain Any two consequences of lantha...

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  10. The ionisation energies of 6d elements are Greater than 3d elements. G...

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  11. Express 2121 in roman numbers.

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  12. Express 1202 in roman numbers.

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  13. Express 2123 in roman numbers.

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  14. Express 2125 in roman numbers.

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

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

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  17. What are the main consequences of lanthanoid contraction ?

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

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  19. What happens when Acidified KMnO4 reacts with H2S ?

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

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