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    The d-And-f-Block Elements

    Multiple Choice QuestionsShort Answer Type

    11.

    The outer electronic configuration of copper is 3d10 4s1, yet it is considered transition element. Why?

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    12. Why the melting points of transition elements are high?
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    13. Why Zn, Cd and Hg are not regarded as transition elements?

    Zn, Cd, Hg are not regarded as transition element Because they have the completely filled d-sub-shell with outer electronic configuration (n-1)d10ns2.
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    14.

    Name the first element of 3rd transition series.

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    15.

    Though copper, silver and gold have completely filled sets of d-orbitals yet they are considered as transition metals. Why?

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    16. Why are transition elements so named?
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    17. Why are transition elements known as d-block elements?
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    18. Write the general electronic configuration of d-block elements.
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    19. Why do some exceptions to the general electronic configuration of d-block elements exists?
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    20. Why Cr and Cu show exceptional configuration?
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