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Why is equropium (II) more stable than c...

Why is equropium (II) more stable than cerium (II) (Eu = 63, Ce =58) give one reason.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Assertion : The highest oxidation state of osmium is +8. Reason : Osmi...

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  2. Explain the following observation : Cu^+ ion is not known in aqueous s...

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  3. Why is equropium (II) more stable than cerium (II) (Eu = 63, Ce =58) g...

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  4. Which ion has maximum size in Lanthanoid series ?

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  5. Write the general electronic configuration of lanthanoids.

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  6. Why does Mn(II) shows maximum paramagnetic character among the dival...

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  7. How would you account for the irregular variation of ionisation enthal...

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  8. Write chemical reaction for preparation of K2Cr207 from chromite ore.

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  9. What is meant by ‘disproportionation’? Give two examples of disproport...

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  10. Compare the chemistry of actinides with that of Lanthanides with speci...

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  11. Compare the chemistry of actinides with that of Lanthanides with speci...

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  12. The 4d and 5d series of transition metals have more frequent metal-met...

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  13. What are the main consequences of lanthanoid contraction ?

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  14. Complete the following reaction equation : MnO4^(-) + Fe^(2+) + H^(+) ...

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  15. Complete the following reaction equation : MnO4^(-) + I^(-) + H2O rarr

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  16. Complete the following reaction equation : S2O3^(2-)+ Cr2O7^(2-)+ H^(...

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  17. How would you account for the following : The transition elements exhi...

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  18. How would you account for the following : Of the d^4 species, Cr^(2+) ...

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  19. How would you account for the following: Cobalt(II) is stable in aqueo...

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  20. Why is equropium (II) more stable than cerium (II) (Eu = 63, Ce =58) g...

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