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(a) Why do transition elements show vari...

(a) Why do transition elements show variable oxidation states ?
(b) The paramagnetic character in 3d transition series elements increases upto Mn and then decreases.Explain why .
(c ) Why doe transition metals exhibit higher enthalpies of atomisation ?

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Explore conceptually related problems

The paramagnetic character in 3d transition series elements increases up to Mn and then decreases. Explain why.

Why do the transition elements exhibit higher enthalpies of atomisation?

Which transition element does not exhibit variable oxidation state?

(b) Why do transition metals form alloy ?

PRADEEP-D- AND F-BLOCK ELEMENTS-IMPORTANT QUESTIONS
  1. Chromium is a typical hard metal while mercury is a liquid.

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  2. Calculate the magnetic moment of a divalent ion in aqueous solution if...

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  3. (a) Why do transition elements show variable oxidation states ? (b) ...

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  4. Name a trasition element wihich does not exhibit variable oxidation st...

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  5. Why is Cr^(2+) reducing and Mn^(3+) oxidising when both have d^(4) con...

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  6. The E^(0)(M^(2+)//M) value for copper is positive (+0.34V). What is po...

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  7. Explain giving reason: (a) Transition metals and many of their compo...

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  8. Why is +2 oxidation state of manganese quite stable while the same is ...

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  9. Which is a stronger reducing agent Cr^(2+) or Fe^(2+) and why ?

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  10. Predict which of the following will be coloured in aqueous solution ?...

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  11. How will you account for the following : (i) Cobalt (II) is stable i...

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  12. Which of the two is paramagnetic : V (IV) or V (V) and why ?

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  13. Copper (I) compounds are white and diamagnetic while copper(II) compou...

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  14. Which divalent metal ion has maximum paramagnetic character among the ...

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  15. Transition elements have greater tendency to form complexes because

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  16. In the titratin of Fe^(2+) ions with KMnO(4) in acidic medium, why dil...

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  17. What is meant by 'disproportionation'? Give two examples of disproport...

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  18. Describe the preparation of potassium permanganate. How does the acidi...

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  19. Describe the preparation of potassium dichromate from iron chromite or...

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  20. Describe the oxidising action of potassium dichromate and write the io...

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