Chapter F, Problem C.20E

(a)

Interpretation Introduction

Interpretation:

Formula of compound formed from sodium ions and chromate ion has to be written.

(b)

Interpretation Introduction

Interpretation:

Formula of compound ammonium sulfite has to be written.

(c)

Interpretation Introduction

Interpretation:

Charge of cation in ${\text{Co}}_{\text{2}}{{\text{(SO}}_{\text{4}})}_3$ has to be calculated.

(d)

Interpretation Introduction

Interpretation:

Charge of cation in ${\text{Pb}}_{\text{3}}{{\text{(PO}}_{\text{4}})}_4$ has to be calculated.