Wrong statement about ionization enthalpies of d-block 

For 3^rd series transition metals ${\mathrm{I}}_2>{\mathrm{I}}_3>{\mathrm{I}}_1$

Order of third ionization enthalpies $C{r}^{2+}<M{n}^{2+}>F{e}^{2+}<C{o}^{2+}$

Order of second ionization enthalpies $V^{+}<C{r}^{+}<M{n}^{+}<F{e}^{+}$   

Increase in first ionization enthalpy is not regular