Chapter 8, Problem 79AE

(a)

Interpretation Introduction

To determine: The oxidation number of $\text{H}$ in the compounds ${\text{BeH}}_{\text{2}}$ , ${\text{MgH}}_{\text{2}}$ , ${\text{CaH}}_{\text{2}}$ , ${\text{SrH}}_{\text{2}}$ and ${\text{BaH}}_{\text{2}}$ .

(b)

Interpretation Introduction

To determine: The compound that has the shortest cation-anion distance.

(c)

Interpretation Introduction

To determine: The correct statement from the statements regarding ${\text{BaH}}_{\text{2}}$ that it requires $3205\text{kJ}$ energy to break one mole of solid into its ions, or breaking up one mole of solid into its ions requires $3205\text{kJ}$ of energy.

(d)

Interpretation Introduction

To determine: The group $\text{2A}$ element that is most similar in ionic radius to the ${\text{Zn}}^{2+}$ ion.