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Actinoid contraction is greater from ele...

Actinoid contraction is greater from element to element than lanthanoid contraction Why?

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The 5f electrons are more effectively sheilded from nuclear charge. In other workds the 5f electrons themselves provide poor shelding from element to element in the series.
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Actinoid contraction is greater from element to element than anthanoid contraction Why?

(i) Give the general electronic configuration of d-block elements, (ii) Silver atom has completely filled d-orbitals (4d^10) in its ground state. Yet, it is considered as transition element. Why? (iii) Cu^+ ion is not stable in aqueous solution. Explain. (iv) Actinoids contraction is greater from element to element than lanthanoid contraction. Why?

Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid contraction is greater from element to element than lanthanoid contraction.

What is lanthanoid contraction?

RESONANCE-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. Write balaned chemical equations for: (i) Mixture of K(2)Cr(2)O(7) a...

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  2. What are inner-transition elements? Decide which of the following atom...

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  3. Actinoid contraction is greater from element to element than lanthanoi...

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  4. The chemistry of the actinoid elements is not so smooth as that of the...

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  5. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions in solution are good reducing a...

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  6. The transition elements have a general electronic configuration:

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  7. The atomic volume of the transition elements are low compared with ele...

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  8. The wrong statement regarding transition metals among the following is...

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  9. First IE of 5d seties element are higher than those of 3d and 4d serie...

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  10. Ionisation energies of Ni and Pt in KJmol^(-1) are given below {:(,u...

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  11. Maximum oxidation state is shown by:

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  12. Which of the following statement is false?

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  13. Which of the following has the maximum number of unpaired d-electron?

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  14. The highest magnetic moments is shown by the transition metal ion wit...

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  15. Magnetic moment of Cr^(+2)(Z=24),Mn^(+2)(Z=25) and Fe^(2+)(Z=26) are x...

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  16. The magnetic moment of .(25)Mn in ionic state is sqrt(15)B.M, then Mn ...

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  17. The colour of transition metal ion is attributed to:

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  18. MnO(4)^(-) is intense pint colour, though Mn is (+7) oxidation state, ...

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  19. The yellow colour of chromates changes to orange on acidification due ...

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  20. Catalytic activity of the transition metals and their compounds can be...

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