Chapter 20.2, Problem 1RC

Interpretation Introduction

Interpretation:

The difference between the two compounds such as ${\text{CrCl}}_{\text{3}}\text{.}{\text{6H}}_{\text{2}}\text{O}$ and $\left[\text{Cr}{\left({\text{H}}_{\text{2}}\text{O}\right)}_6\right]{\text{Cl}}_{\text{3}}$ has to be interpreted.

Concept Introduction:

Coordination compounds:

• The coordination compound consists of a complex ion, ligands and counter ions.
• In a coordination complex, the complex ion is the central metal ion which makes coordinate bonds with the ligands.
• The ligands are molecules or ions that form the coordination complex by binding with the central metal ion through the donation of one or more electron pairs.
• In the coordination complex, the central metal ion and the ligands are enclosed within the $\left[\right]$ square bracket which is known as the coordinate sphere.
• The counter ions are the species that lies outside of the coordinate sphere to maintain electrical neutrality in the complex.

Hydrated compounds:

Hydrated compounds are simply salts that are associated with one or more water molecules.