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Why are Zn, Cd and Hg not included among...

Why are Zn, Cd and Hg not included among transition elements ?

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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -EXERCISE (VERY SHORT ANSWER-TYPE QUESTIONS)
  1. Give an example of disproportionation reaction.

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  2. Name an ore each of Cr and Mn.

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  3. Why are Zn, Cd and Hg not included among transition elements ?

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  4. The magnetic moment of a metal is sqrt(15)BM. How many unpaired electr...

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  5. In case of transition elements of the first series (from Sc to Cu), wh...

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  6. Name the transition element that has the highest density.

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  7. Which among Fe^(2+) & Fe^(3+) salts have higher magnetic moment ?

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  8. Determine whether Ti^(4+) ion is diamagnetic or paramagnetic.

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  9. Why does V(2)O(5) act as a catalyst ?

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  10. Name the transition element which does not exhibit a variable oxidatio...

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  11. Why does cerium exhibit + 4 oxidation state ?

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  12. Why can't copper replace H(2) from an acid solution ?

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  13. Which is a stronger reducing agent among Cr^(2+) and Fe^(2+) ?

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  14. Why is d^(1) configuration of transition elements highly unstable ?

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  15. Why is the value of E(Cu^(2+)|Cu)^(0)(+0.34V) positive ?

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  16. Standard reduction potential (E^(0)) of Mn^(3+)|Mn^(2+) system is high...

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  17. Why does Mn^(2+) exhibit the highest paramagnetism among the bivalent ...

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  18. What do you obtain if MnO(2) is fused with solid KOH in air ?

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  19. What is the higher oxidation state exhibited by actinoids ?

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  20. Why are Eu^(2+) and Yb^(2+) highly stable ?

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