Ionic Formula Practice Answer Key (CHEM 1405)

Name

Cation

Anion

Formula

1.  calcium bromide

Ca²⁺

Br^-

CaBr₂

2.  magnesium phosphide

Mg²⁺

P^3-

Mg₃P₂

3.  aluminum oxide

Al³⁺

O^2-

Al₂O₃

4.  barium sulfide

Ba²⁺

S^2-

BaS

5.  sodium phosphide

Na⁺

P^3-

Na₃P

6.  strontium chloride

Sr²⁺

Cl^-

SrCl₂

7.  calcium nitride

Ca²⁺

N^3-

Ca₃N₂

8.  ammonium bromide

NH₄⁺

Br^-

NH₄Br

9.  calcium sulfate

Ca²⁺

SO₄^2-

CaSO₄

10.  magnesium nitrate

Mg²⁺

NO₃^-

Mg(NO₃)₂

11.  sodium carbonate

Na⁺

CO₃^2-

Na₂CO₃

12.  zinc hydroxide

Zn²⁺

OH^-

Zn(OH)₂

13.  barium nitrite

Ba²⁺

NO₂^-

Ba(NO₂)₂

14.  aluminum sulfite

Al³⁺

SO₃^2-

Al₂(SO₃)₃

15.  lead II nitrate

Pb²⁺

NO₃^-

Pb(NO₃)₂

16.  copper I phosphate

Cu⁺

PO₄^3-

Cu₃PO₄

17.  ammonium carbonate

NH₄⁺

CO₃^2-

(NH₄)₂CO₃

18.  tin IV nitrate

Sn⁴⁺

NO₃^-

Sn(NO₃)₄

19.  nickel II acetate

Ni²⁺

C₂H₃O₂^-

Ni(C₂H₃O₂)₂

20.  chromium III sulfate

Cr³⁺

SO₄^2-

Cr₂(SO₄)₃

21.  iron III nitrite

Fe³⁺

NO₂^-

Fe(NO₂)₃

22.  cobalt II hydroxide

Co²⁺

OH^-

Co(OH)₂