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(a) What are transition elements ? Which...

(a) What are transition elements ? Which of the d-block elements are not regarded as transition elements ? (b) In what way the electronic configurations of transition elements are different from those of representative elements ?

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Knowledge Check

  • Transition elements

    A
    exhibit inert pair effect
    B
    exhibit variable oxidation state
    C
    have low melting point
    D
    do not show catalytic properties

  • General electronic configuration of transition elements is

    A
    `(n-1)d^(1-10)ns^(1-2)`
    B
    `(n-2)^(1-10)ns^(1-2)`
    C
    `(n-1)d^(1-8)ns^(2)`
    D
    `(n-2)^(1-10)ns^(2)`

  • Which of the d-block elements are not referred to as the transition elements ?

    A
    Group 9
    B
    Group 12
    C
    Group 10
    D
    Group 13
    • MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-REVISION EXERCISES ( SHORT ANSWER QUESTION)
    1. (a) What are transition elements ? Which of the d-block elements are n...

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    2. (a) What is the difference between the electronic structures of transi...

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    3. Give an explanation for each of the following observations : (i) Th...

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    4. Give reasons for the following: (a) Transition metals and many of...

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    5. What is lanthanoid contraction? What is its cause and what ar its cons...

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    6. What are transition elements? Explain the following properties : (a) V...

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    7. (a) Calculate the magnetic moment of a divalent ion in aqueous solutio...

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    8. (a) Explain why Ce^(4+) is a good oxidising agent whereas Sm^(2+) is ...

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    9. How would you account for the following ? (i) With the same d-orbit...

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    10. Explain the following observations giving an appropriate reason for ea...

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    11. Transition elements are 'd-block elements. (i) Write any four characte...

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    12. (a) Why are Zn^(2+) salts white while Cu^(2+) salts are blue ? (b) W...

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    13. (a) How does permanganate solution react with Fe(II) ions? Write balan...

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    14. What are lanthanoids? Give their general electronic configurations. Wh...

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    15. (a) Why do transition elements show catalytic properties? (b) Calculat...

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    16. (a) Write down any three similarities between lanthanoids and actinoid...

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    17. (a) Define transition elements. Give the general electronic configurat...

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    18. (a) Why is the highest oxidation state of a transition metal exhibited...

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    19. (a) Why do the transition elements exhibit higher enthalpies of atomiz...

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    20. (a) Why do Zr and Hf have similar properties? (b) What happens when K2...

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