Chemistry - Complete d-block Question with Solution | TestHub

The atomic numbers of vanadium $(\mathrm{V})$, Chromium $(\mathrm{Cr})$, manganese $(\mathrm{Mn})$ and iron $(\mathrm{Fe})$ are respectively 23 , 24,25 and 26 . Which one of these may be expected to have the highest second ionization enthalpy?