The elements of the three transition series of the \( d \)-block are given below: Sc Ti V Cr Mn ...

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The elements of the three transition series of the \( d \)-block are given below:
Sc Ti V Cr Mn Fe Co Ni Cu \( \mathrm{Zn} \)
La Hf Ta W Re Os Ir Pt Au Hg
In any transition series, as we move form left to right, the \( d \)-orbitals are progressively filled and their properties vary accordingly.
Which of the following is the correct order of second ionization energy?
(a) \( \mathrm{V}\mathrm{Cr}\mathrm{Mn} \)
(b) \( \mathrm{V}\mathrm{Cr}\mathrm{Mn} \)
(c) \( \mathrm{V}\mathrm{Cr}\mathrm{Mn} \)
(d) \( \mathrm{V}\mathrm{Cr}\mathrm{Mn} \)
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