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Write one similarity and one difference between the chemistry of lanthanoids and that of actinoids.

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Similarity : Both are inner transition elements i.e., electrons are being filled in second last shell.
Difference : Actinoid contraction from element to element is greater than lanthanoid contraction.
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Write one similarity and one difference between the chemistry of lanthanoid and actinoid elements.

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Lanthanoids and actinoids.

U-LIKE SERIES-THE D-AND F-BLOCK ELEMENTS -SHORT ANSWER QUESTIONS (2 marks each)
  1. Complete and balance the following chemical equations : (a) Fe^(2+)+...

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  2. In the following ions : Mn^(3+),V^(3+),Cr^(3+),Ti^(4+) (Atomic no....

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  3. Write one similarity and one difference between the chemistry of lanth...

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  4. What are transition elements ? Write two characteristics of the transi...

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  5. Why do transition elements show variable oxidation states ? In 3d seri...

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  6. State reasons for the following: (i) Cu (1) ion is not stable in an ...

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  7. Complete the following chemical equations : (i) Cr(2)O(7)^(2-)+H^(+)...

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  8. Complete the following chemical equations : (i) MnO(4)^(-)(aq)+S(2)O...

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  9. Assign reasons for the following: (i) Copper(I) ion is not known in ...

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  10. How would you account for the following: (i) Cr^(2+) is reducing in ...

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  11. Explain the following observations: (i) Generally there is an increa...

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  12. Complete the following chemical reaction equations : (i) MnO(4)^(-)(...

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  13. Explain the following giving reasons : (i) It is difficult to separa...

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  14. The sum of the first and second ionisation enthalpies and those of thi...

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  15. Compare the relative stability of +2 oxidation states in aqueous solut...

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  16. A mixed oxide of iron and chromium FeO.Cr(2)O(3) is fused with sodium ...

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  17. Complete the following reactions : (a) (NH(4))(2)Cr(2)O(7)overset(He...

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  18. Why E^(@) values for Mn, Ni and Zn are more negative than expected ?

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  19. Out of Cu(2)Cl(2) and CuCl(2), which is more stable and why ?

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  20. Although fluorine is more electronegative than oxygen, but the ability...

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