A) \[Zn>Fe>Cu>Cr\]
B) \[Sc=Ti<V=Cr\]
C) \[Zn<Cu<Ni<Co\]
D) \[V>Cr>Mn>Fe\]
Correct Answer: A
Solution :
The ionisation energies increase with increasing atomic number. The trend is irregular among d-block elements. Zn > Fe > Cu > Cr is correct order.
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