Chapter 2, Problem 2A.18E

(a)

Interpretation Introduction

Interpretation:

The number of valence electrons present in ${\text{In}}^{+}$ ion has to be predicted.

Concept Introduction:

The convention followed to remove or add electrons is electrons of largest principal quantum number are lost first. In case of subshells of the same $\text{n}$ value, electrons are lost from the subshell with highest $\text{l}$ value. In case of d-block elements the $\text{ns}$ electrons are removed prior to $\left(\text{n}-1\right)\text{d}$ electrons.

(b)

Interpretation Introduction

Interpretation:

The number of valence electrons present in ${\text{Tc}}^{2+}$ ion has to be predicted.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The number of valence electrons present in ${\text{Ta}}^{2+}$ ion has to be predicted.

Concept Introduction:

Refer to part (a).

(d)

Interpretation Introduction

Interpretation:

The number of valence electrons present in ${\mathrm{Re}}^{+}$ ion has to be predicted.

Concept Introduction:

Refer to part (a).