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What happens when 88% of copper and 12% of tin combine together?

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Give the preparation of Potassium Permanganate from Pyrolusite ore.

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  2. Explain with reference to d-block elements: magnetic property.

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  3. What happens when 88% of copper and 12% of tin combine together?

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  4. What are inner transition elements? Why are they so called?

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  5. Why are there only 14 elements in the lanthanoid series?

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  6. How does KMnO4 act as a powerful oxidizing agent in neutral, alkaline ...

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  7. Discuss the general properties of transition elements with reference t...

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

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  9. Why separation of lanthanoid elements is difficult ?

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

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  11. Why Zr and Hf exhibit similar properties ?

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

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  13. Explain :Transition elements exhibit variable oxidation states.

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  14. Express 1036 in roman numbers.

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

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

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

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  18. Transition metals form mostly coloured compounds.Explain.

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

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

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