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Why separation of lanthanoid elements is...

Why separation of lanthanoid elements is difficult ?

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Discuss the general properties of transition elements with reference t...

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  2. Explain the following: Why do transition metals form alloys readily?

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  3. Why separation of lanthanoid elements is difficult ?

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  4. Zn and Cd are not normally considered as transition metals. Why ?

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  5. Why Zr and Hf exhibit similar properties ?

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  6. Fe^(3+) is more stable than Fe^(2+) . Explain.

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  7. Explain :Transition elements exhibit variable oxidation states.

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  8. Express 1036 in roman numbers.

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  9. Complete the following chemical equation : KMnO4 overset (513K) rarr

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  10. Complete the following chemical equation : MnO2+ KOH + O2 rarr

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  11. Does actinoids show actinoid contraction similar to lanthanoid contrac...

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  12. Transition metals form mostly coloured compounds.Explain.

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  13. Complete the following chemical equation : MnO4^(-)+ NO2^(-)+ H^(+) ra...

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  14. Give the preparation of Potassium Permanganate from Pyrolusite ore.

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  15. Explain how the colour of a solution of K2Cr2O7 depends on the pH of t...

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

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

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  18. Give one method of Preparation of K2Cr2O7 from sodium chromate.

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  19. Why is Cu considered to be a transition element and Zn not ?

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

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