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D and F Block Elements Test - 2
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D and F Block Elements Test - 2
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  • Question 1/7
    1 / -0

    Which element belongs to d – block

    Solutions

    Cu; because last electron enters d-orbital (3d10 4s1).

     

  • Question 2/7
    1 / -0

    Variable valency is shown by

    Solutions

    Cu due to the presence of vacant d-orbital.

     

  • Question 3/7
    1 / -0

    The coinage metals are

    Solutions

    Copper, silver and gold; all the three were used for making coins.

     

  • Question 4/7
    1 / -0

    Which of the following structure is that of a coinage metal

    Solutions

    2, 8, 18, 1 = Cu

     

  • Question 5/7
    1 / -0

    Transitional elements are named transition elements because their characters are

    Solutions

    In between s and p-block elements.

     

  • Question 6/7
    1 / -0

    Which of the following transition metal is present in misch metal

    Solutions

    Misch metal is an alloy of rare earth metals with composition :

    Rare earth metals         –    94.95%

    Iron (Fe)                        –    5%

    S, C, Ca, Al...                –    Traces

     

  • Question 7/7
    1 / -0

    Which of the following statements is not true in regard to transition elements

    Solutions

    "All their ions are colourless" this sentence is false because they are 90% coloured and only few are colourless.

     

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