Ions

Week 1

100

NH₄⁺

Ammonium

200

Cu⁺

Copper l

300

Hydroxide

OH^-

400

Al³⁺

Aluminum

500

Carbonate

CO₃^2-

Week 2

100

Hydronium

H₃O⁺

200

Oxide

O^2-

300

Nitrate

No₃^-

400

2n²⁺

Zinc

500

Cl^-

Chloride

Week 3

100

Na⁺

Sodium

200

Calcium

Ca²⁺

300

F^-

Fluoride

400

Phosphate

PO₄^3-

500

Acetate

C₂H₃O₂^-

Week 4

100

K⁺

Potassium

200

Copper ll

Cu²⁺

300

Bromide

Br^_

400

Ba²⁺

Barium

500

Sulfate

SO₄^2-

Week 5

100

Li⁺

Lithium

200

Magnesium

Mg²⁺

300

SCN^-

Thiocynate

400

N^3-

Nitride

500

Chlorate

ClO₃^-