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Which element among d-block element has(...

Which element among d-block element has(i) the lowest melting point and (ii) the highest melting point

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(i) As Hg has weakest interatomic interaction on account of no unparied electrons, `(n-1)d^(10)ns^(2)` available for bonding.
(ii) As W has highest interatomic interaction on account of more number of unpareid electrons, `(n-1)d^(5)ns^(1)` available for bonding.
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. What is meant 'lanthanoid contraction'?

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

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

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

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  5. Assign reasons for the following : (b) The ionization energy of 5d e...

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  6. Why do transition elements shows variable oxidation states?

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

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

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  9. E(Mn^(3+)//Mn^(2+))^@is highly positive than that of E(Cr^(3+)//Cr^(2+...

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  10. Use the data to answer the following and also justify giving rason: {:...

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

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  12. Why Ti^(+4) complex are diamagnetic?

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  13. A substance is found to have a magnetic moments of 3.9BM.How many unpa...

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  14. Explain giving reasons: (i) Transition metals and many of their compou...

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  15. Describe The general characteristics of transition elements with speci...

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  16. Which type of reaction MnO(4)^(2-)show with acid , dilute -alkali or w...

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  17. Why is KMnO4 kept in dark bottles ?

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  18. Why does AgNO(3) produced a black stain on the skin?

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  19. Why is AgBr used in photography ?

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  20. Why it is not advisable to dissolve KMnO(4) in cold and concentrated H...

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