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Assign reasons for the following: Why ...

Assign reasons for the following:
Why is the chemistry of all lanthanoids indential ?

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Chemistry of all the lanthanoids is quite similar.

Assign reasons for the following: Cu(I) compounds are white and diamagnetic identical ?

Assign reasons for the following: What is lanthanoid contraction ? Explain its any one consequence.

Explain the following terms : (a) Chemistry of all Lanthanoids is so identical . (b) Silver atom has completely filled d- orbitals (4d^(10)) in its ground state . How can you say that is a transition elements ?

Complete the following with stereo - chemistry.

Which of the following system is coloured in lanthanoide ions?

Give reasons for each of the following: (i) Size of trivalent lanthanoid cation decreases with increase in the atomic number. (ii) Transition metal fluorides are ionic in nature whereas bromides and chlorides are usualy covalent in nature. (iii) Chemistry of all the lanthanoids is quite similar.

Assign reasons for the following : (b) The ionization energy of 5d elements are greater than 3d elements.

Assign R/S notation to the following fischer formula

Which of the following oxidation state si common for all lanthanoids?

ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(LONG ANSWER QUESTIONS)
  1. Assign reasons for the following : (b) The ionization energy of 5d e...

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  2. Assign reasons for the following : Write equations for the preparati...

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  3. Assign reasons for the following: Sc^(3+) ion is colourless while Cr...

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  4. Why are Mn^(2+) compounds more stable than Fe^(2+) towards oxidation t...

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  5. Assign reasons for the following: Cu(I) compounds are white and diam...

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  6. Assign reasons for the following: Why is the chemistry of all lantha...

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  7. Assign reasons for the following: What is lanthanoid contraction ? E...

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  8. How and you account for the following : (i) Cabalt (II) is stable in...

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  9. Why Sm^(2+) , Eu^(2+) and Yb^(2+) ions are good reducing agents , but ...

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  10. Compare the properties of lanthanoids and actinoids.

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  11. Given below are the electrode potential values, E^(Theta) for some of ...

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  12. Complete the following chemical reaction equations : (i) Cr(2)O(7)^(...

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  13. Decribe the general trends in the following properties of the first se...

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  14. Assign reasons for each of the following (i) Trasitiono elements exh...

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  15. (a) Complete the following chemical reaction equations : (i) MnO(4(a...

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  16. Explain the following observations about the transition/ inner-transit...

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  17. Complete the follwing chemical equations for reactions : (i) Fe^(@+...

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  18. Give an explanation for each of the following observations: (i) The...

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  19. Complete the follwing chemical equations for reactions : (i) Fe^(@+...

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  20. Explain the following observations: (i) Transition elements are know...

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