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What are 'd' and 'f' block elements ?...

What are 'd' and 'f' block elements ?

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The d-block elements are the elements in which the last electron enters the d orbital of the penultimate shell i.e., (n-1) orbital, where n is the outermost shell and the elements in which the differentiating electron (last electron ) enters in to (n-2) f-orbital are known as f-block elements. In these elements differentiating electron enters into prepenultimate shell.
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d-block elements

What are the d- block elements? Write any four properties of d - block elements and give their general outer electronic configuration.

Knowledge Check

  • d block elements mostly form

    A
    coloured ions
    B
    colourless ions
    C
    white coloured ions
    D
    none of the above

  • F block elements are known as

    A
    transition elements
    B
    inner transition elements
    C
    intransitiin elements
    D
    outer transition elements

  • f-block elements are called

    A
    Representative elements
    B
    Transition elements
    C
    Inner transition elements
    D
    Inert elements

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    The correct statement(s) from among the following is//are : (i) all the d and f -block elements are metals (ii) all the d and f -block elements form coloured ions (iii) all the d - and f -block elments form paramagnetic ions

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