Chapter 19, Problem 19.85SP

(a)

Interpretation Introduction

Interpretation:

The oxidation state of Sulphur in $\text{HgS}$ has to be indicated.

Concept Introduction:

Oxidation state:

Oxidation state or oxidation number of an atom is the charge carried by that atom which indicates the number of electrons that can be gained or lost to form a chemical bond with other atoms.

(b)

Interpretation Introduction

Interpretation:

The oxidation state of Sulphur in ${\text{Ca(HSO}}_{\text{4}}{\text{)}}_{\text{2}}$ has to be indicated.

Oxidation state:

Oxidation state or oxidation number of an atom is the charge carried by that atom which indicates the number of electrons that can be gained or lost to form a chemical bond with other atoms.

(c)

Interpretation Introduction

Interpretation:

The oxidation state of Sulphur in ${\text{H}}_{\text{2}}{\text{SO}}_{\text{3}}$ has to be indicated.

Oxidation state:

Oxidation state or oxidation number of an atom is the charge carried by that atom which indicates the number of electrons that can be gained or lost to form a chemical bond with other atoms.

(d)

Interpretation Introduction

Interpretation:

The oxidation state of Sulphur in ${\text{FeS}}_{\text{2}}$ has to be indicated.

Oxidation state:

Oxidation state or oxidation number of an atom is the charge carried by that atom which indicates the number of electrons that can be gained or lost to form a chemical bond with other atoms.

(e)

Interpretation Introduction

Interpretation:

The oxidation state of Sulphur in ${\text{SF}}_4$ has to be indicated.

Oxidation state:

Oxidation state or oxidation number of an atom is the charge carried by that atom which indicates the number of electrons that can be gained or lost to form a chemical bond with other atoms.