Chapter 26, Problem 26.59P

Interpretation Introduction

Interpretation:

Complex ions ${{\text{[Cr(H}}_{\text{2}}{\text{O)}}_{\text{6}}\text{]}}^{\text{3+}}$, ${{\text{[Co(NH}}_{\text{3}}{\text{)}}_{\text{6}}\text{]}}^{\text{3+}}$, ${{\text{[CrF}}_{\text{6}}\text{]}}^{\text{3-}}$, ${{\text{[Cr(CN)}}_{\text{6}}\text{]}}^{\text{3-}}$, and ${{\text{[Ru(CN)}}_{\text{6}}\text{]}}^{\text{3-}}$ has to be arranged in the order of increasing ${\Delta }_0$.

Concept Introduction:

Ligands that are weak field have high spin and they lower the value of ${\Delta }_0$.  The ligands that are strong field will have low spin and they have higher value of ${\Delta }_0$.  If the oxidation state of the transition metal is higher, then the value of ${\Delta }_0$ will be higher.  In the periodic table, as moving down the group, the value of ${\Delta }_0$ increases.