Chapter 9, Problem 9C.3E

(a)

Interpretation Introduction

Interpretation:

The chemical formula of the complex potassiumhexacyanidochromate (III) has to be given.

Concept Introduction:

Rules for writing the formula of the complex:

• Write the chemical symbol of the central atom (usually a metal atom) first, followed by symbols for the ligands, then enclose the entire collection of symbols between square brackets and add the overall charge.
• Write the chemical symbols of ligands in alphabetical order, when different ligands contain the same element, those denoted by a single letter (e.g., O) take priority over symbols represented by two or more letters (e.g., OH).  If a particular point needs to be emphasized, then the order may be varied.  For example water as a ligand is denoted ${\text{OH}}_{\text{2}}$, to emphasize that the O links to the metal atom.
• To avoid any ambiguity, the linking atom can be underlined.

(b)

Interpretation Introduction

Interpretation:

The chemical formula of the complex pentamminesulphatocobalt (III) chloride has to be given.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The chemical formula of the complex tetraaminediaquacobalt (III) chloride has to be given.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The chemical formula of the complex sodiumbisoxalato(diaqua)ferrate(III) has to be given.

Concept Introduction:

Refer to part (a).