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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Although +3 is the characteristic oxidation State for lanthanoids but ...

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  2. What is the coordinate number of the central metal ions in the followi...

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  3. Complete the reaction :

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  4. Match the properties given in Column I with the metals given in Column...

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  5. Write lewis dot symbol for following elements : scandium

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  6. Write lewis dot symbol for following elements :helium

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  7. Complete the reaction :

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  8. Draw lewis structure of SOCl2

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  9. In the following questions a statement of assertion followed by a stat...

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  10. Assertion : Separation of Zr and Hf is difficult. Reason : Because Zr ...

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  11. Assertion : Actinoids form relatively less stable complexes as compare...

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  12. Assertion : Cu cannot liberate hydrogen from acids. Reason : Because i...

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  13. Assertion : The highest oxidation state of osmium is +8. Reason : Osmi...

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

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

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  16. Which ion has maximum size in Lanthanoid series ?

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  17. Write the general electronic configuration of lanthanoids.

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

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

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

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