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In 3d series (Sc to Zn), Zinc shows the ...

In 3d series (Sc to Zn), Zinc shows the lowest enthalpy of atomization. Why ?

Text Solution

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Due to absence of unpaired electrons.
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Why do the transition elements have higher enthalpies of atomisation? In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?

In the 3d series (Sc = 21 to Zn = 30) : (i) Which elements shows maximum number of oxidation states ? (ii) Which elements shows only +3 oxidation state ? (iii) Which elements has the lowest enthalpy of atomization?

Knowledge Check

  • In first transition series which of the following has lowest enthalpy of atomisation?

    A
    Sc
    B
    Cu
    C
    Ti
    D
    Zn

  • In the series Sc (2 = 21) to Zn (Z=30), the enthalpy of atomisation of which element is least?

    A
    Sc
    B
    Mn
    C
    Cu
    D
    Zn

  • Assertion : In the series Sc to Zn, the enthalpy of atomisation of zinc is the lowest. Reason : Zinc has greater number of unpaired electrons.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true and reason not is the correct explanation of assertion.
    C
    If assertion is trun but reason is false.
    D
    If both assertion and reason are false.

    • Similar Questions

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    Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which element shows the maximum number of oxidation states and why ?

    In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomisation of zinc is the lowest, i.e., 126 kJ mol^(-1) . Why ?

    In the series Sc (Z= 21) to Zn ( Z= 30) , the enthalpy of atomisation of zinc is the lowest , i.e., 126 kJ mol^(-1) . Why ?

    In the series Sc(Z=21) to Zn(Z=30) the enthalpy of atomisation of zinc is the lowest, i.e., 126 kJ mol^(-1) . Why?

    Which one of the following transition element has the lowest value of enthalpy of atomization?

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