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Name the lightest and the heaviest trans...

Name the lightest and the heaviest transition elements.

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Lightest : Scandium (Sc), Heaviesh : Iridium (Ir).
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -QUESTION - ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. Why do Zr(Z = 40) and Hf(Z = 72) have comparable atomic radii ?

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  2. In aqueous solution, which is the most stable oxidation state of titan...

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  3. Name the lightest and the heaviest transition elements.

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  4. Name the largest trivalent ion that exists between lanthanum (Z = 57) ...

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  5. Give one use each of niobium and tantalum.

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  6. Among Fe^(2+) and Fe^(3+), which is more stable ? Why ?

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  7. Which bivalent transition metal ion in the 3d-series is the most param...

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  8. Why is the ionic radius of Fe^(2+) less than that of Mn^(2+) ?

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  9. Name a lanthanoid that exhibits + 4 oxidation state.

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  10. Why is KMnO(4) kept in dark coloured bottles ?

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  11. What happens when the pH of K(2)Cr(2)O(7) solution is increased ? Give...

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  12. Classify the following as d-block elements, lanthanoids and actinoids ...

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  13. Which has the highest density ? Al, Mg, Cu, Ni, Fe

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  14. Substances made of copper form green coloured coating when left in moi...

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  15. The extent of actinoid contraction is more than lanthanoid contraction...

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  16. Which element is used as a 'bone nail' in surgery ?

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  17. Write the ionic equation of the disproportionation reaction of CrO(4)^...

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  18. Transition metal ions have high hydration enthalpy. Explain why ?

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  19. Name the elements of the first transition series with the highest and ...

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  20. Name the transition elements with the highest and the lowest density.

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