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Define paramagnetic and ferromagnetic su...

Define paramagnetic and ferromagnetic substances ? Account for the paramagnetic character of transition metal compounds. How does the paramagnetic character of the divalent ions of first transition metal series vary from Ti (Z = 22) to Cu (Z=29) ?

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ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)
  1. Why is it that while going from Hf to Au, the m. pt. first increases u...

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  2. Ni (II) compounds are thermodynamically more stable than Pt(II) compou...

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  3. Define paramagnetic and ferromagnetic substances ? Account for the par...

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  4. Explain the following (a) Zr and Hf exhibit similar properties. (b...

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  5. Why do the transition elements exhibit similarity in properties along ...

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  6. Account for the fact that second ionization energies of both Cr and Cu...

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  7. Account for the fact that the third ionization enthalpies of both Mn a...

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  8. Explain that the compounds of tranisition metals are usually coloured ...

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  9. Why niobium and tantalum show similar properties?

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  10. Why do transition metals exhibit the property to form alloys and compl...

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  11. What is an alloy ? Name the two types of alloys formed by transition e...

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  12. Transition metals easily form intermetallic alloys. What property of t...

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  13. List one use of KMnO4 under each of the following heads : (i) as a l...

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  14. State any four uses of KMnO4

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  15. State any four uses of K2Cr2O7.

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  16. Predict with justification the number of moles of KI that would be oxi...

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  17. Draw the structure of : (i) chromate ion and (ii) dichromate ion.

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  18. What is the chemistry of chromyl chloride test?

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  19. How can you convert potassium dichromate into chromyl chloride ? Give ...

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  20. What happens when : (i) K2CrO7 reacts with acidified solution of KI ...

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