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Why do most transition metal ions show v...

Why do most transition metal ions show variable oxidation states ?

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This is because ns and (n - 1)d orbitals do not differ much in energy. Electrons from both may take part in bonding. Hence they show variable oxidation states.
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Why do transition elements show variable oxidation state?

(i) What are transition elements ? (ii) Why do transition elements show variable oxidation states ?

(a) Why do transition elements show variable oxidation states? (i) Name the element showing maximum number of oxidation states among the first series of transition metals from Sc (Z = 21) to Zn (Z = 30). (ii) Name the element which shows only + 3 oxidation state. (b) What is lanthanoid contraction? Name an important alloy which contains some of the lanthanoid metals.

Why d block metals show variable oxidation state ?

" The transition metal which does not show variable oxidation state is "

U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -VERY SHORT ANSWER QUESTIONS (1 mark each)
  1. State a consequence of lanthanoid contraction shown by transition elem...

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  2. Why is that orange solution of K(2)Cr(2)O(7) turns yellow on adding N...

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  3. Why do most transition metal ions show variable oxidation states ?

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  4. Why is Ce^(4+) in aqueous solution a good oxidising agent?

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  5. One unpaired electron in atom contributes a magnetic moment of 1.1 BM....

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  6. Why do Zr and Hf exhibit similar properties?

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  7. Name one ore of manganese and chromium.

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  8. What are the two important oxidation states of Group 6 elements of the...

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  9. In the transition series, with an increase in atomic number, the atomi...

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  10. Write the atomic number of the element in which the filling of 3d subs...

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  11. What is lanthanoid contraction ?

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  12. In permanganate ion, all the bonds between Mn and O are covalent. Give...

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  13. Which is the most stable oxidation state among lanthanoids ?

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  14. State the common characteristic of actinoids and lanthanoids which pla...

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  15. The electronic configuration of an element is 3d^(5) 4s^(2). Write its...

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  16. Why is HCl not used to acidify a permanganate solution in volumetric e...

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  17. Name the metal with tripositive charge represented by the following el...

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  18. The d-electron configuration of Mn^(2+) and Ti^(2+) is d^(5) and d^(2)...

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  19. What is the general formula by which the electronic configuration of t...

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  20. The electronic configuration of an element is 3d^(5)4s^(1). Write its ...

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