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Name the (i) lightest and the (ii) heavi...

Name the (i) lightest and the (ii) heaviest element (in terms of density)among the transition elements.

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The correct Answer is:
`Sc`(ii) `Os` `or Ir`
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-I PART-I
  1. Name the d-block elment which do not have partially filled d-orbitals ...

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  2. What is meant by the 'lanthanide contraction'? Mention one important f...

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  3. Name the (i) lightest and the (ii) heaviest element (in terms of densi...

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  4. Which element among d-block element has(i) the lowest melting point an...

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  5. Why Zinc has lowest melting point in 3d series?

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  6. Why are the ionisation energies of 5d elements greater than 3d element...

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  7. K(2)PtCl(6) is a well known compound whereas corresponding Ni compound...

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  8. Why do transition elements show variable oxidation state?

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  9. What is the most common oxidation state of first transition series?

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  10. What is meant by disproportionation of an oxidation state ? Give an e...

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  11. Name the three factors which determine the stability of a particular ...

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  12. Why is the value for (Mn^(3+))/(Mn^(2+)) couple much more positive tha...

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  13. Most of transition , metals can display hydrogen from dilute acid. Why...

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  14. {:("Element",Cr,Mn,Fe),(E^(0)(M^(2+)//M),-0.90V,-1.18V,-0.4V),(E^(0)(M...

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  15. Which of the following ions would form (i) coloured and (ii) colourles...

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  16. Why Ti^(4) complex are diamagnetic?

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  17. A substance is found to hav a magnetic moments of 3.9BM.How many unpai...

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  18. Why do Mn(II) show maximum paramagnetic character amongst the bivalent...

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  19. Explain gives reason. (a) Transition metal and many of their compoun...

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  20. Explain why transition metals and their many compounds act as goodd ca...

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