   Chapter 21, Problem 85CWP

Chapter
Section
Textbook Problem

# Which of the following ions is( are) expected to form colored octahedral aqueous complex ions?a. zn2+b. Cu2+c. Mn3+d. Ti4+

(a)

Interpretation Introduction

Interpretation: The ions that are expected to form colored octahedral complex ions are to be determined.

Concept introduction: There is degeneracy in the d orbitals of a transition metal atom or ion. It means they have same energy levels. But when they interact with ligands, the d orbitals become non degenerate, i.e. they do not have same energy. Color of the complex ions depends upon how the 3d electrons occupy the split energy levels.

To determine: If Zn+2 will form colored octahedral aqueous complex or not.

Explanation

Explanation

The electronic configuration of Zn is [Ar]3d104s2 . With the loss of two electrons, it becomes Zn+2<

(b)

Interpretation Introduction

Interpretation: The ions that are expected to form colored octahedral complex ions are to be determined.

Concept introduction: There is degeneracy in the d orbitals of a transition metal atom or ion. It means they have same energy levels. But when they interact with ligands, the d orbitals become non degenerate, i.e. they do not have same energy. Color of the complex ions depends upon how the 3d electrons occupy the split energy levels.

To determine: If Cu+2 will form colored octahedral aqueous complex or not.

(c)

Interpretation Introduction

Interpretation: The ions that are expected to form colored octahedral complex ions are to be determined.

Concept introduction: There is degeneracy in the d orbitals of a transition metal atom or ion. It means they have same energy levels. But when they interact with ligands, the d orbitals become non degenerate, i.e. they do not have same energy. Color of the complex ions depends upon how the 3d electrons occupy the split energy levels.

To determine: If Mn+3 ion will form colored octahedral aqueous complex or not.

(d)

Interpretation Introduction

Interpretation: The ions that are expected to form colored octahedral complex ions are to be determined.

Concept introduction: There is degeneracy in the d orbitals of a transition metal atom or ion. It means they have same energy levels. But when they interact with ligands, the d orbitals become non degenerate, i.e. they do not have same energy. Color of the complex ions depends upon how the 3d electrons occupy the split energy levels.

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