Chapter 2, Problem 50QRT

(a)

Interpretation Introduction

Interpretation:

The given compound ${\text{Rb}}_{\text{2}}\text{O}$ has to be identified based on the properties or formulas as ionic and or molecular compound.

Concept Introduction:

Ionic compounds:

Ionic compounds are formed when a metal and non-metal combines.  Metal forms cation by donation of electrons while the non-metal forms anion by accepting the electron.

Molecular compounds:

Molecular compound is formed by the combination of two or more non-metals.  It is formed by the sharing of electrons.  Water, hydrogen sulfide etc. are examples of molecular compounds.

(b)

Interpretation Introduction

Interpretation:

The given compound ${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}$ has to be identified based on the properties or formulas as ionic and or molecular compound.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

The compound which is liquid at room temperature has to be identified based on the properties or formulas as ionic and or molecular compound.

Concept Introduction:

Refer part (a).

(d)

Interpretation Introduction

Interpretation:

The compound which conducts electricity when molten has to be identified based on the properties or formulas as ionic and or molecular compound.

Concept Introduction:

Refer part (a).