Week 6-10

Week 6

100

Hydrogen

H⁺

200

Iron 2

Fe²⁺

300

Chronium 3

Cr³⁺

400

Hydride

H^-

500

Chromate

CrO₄^2-

Week 7

100

Lead 2

Pb²⁺

200

Stronium

Sr²⁺

300

Nitrite

NO₂^-

400

Oxalate

C₂O₄^2-

500

Sulfide

S^2-

Week 8

100

Nickel 2

Ni²⁺

200

Lead 5

Pb⁴⁺

300

Iodide

I^-

400

Perchlorate

ClO₄^-

500

Permanganate

MnO₄^-

Week 9

100

Tin 3

Sn²⁺

200

Beryillum

Be²⁺

300

Chlorite

ClO₂^-

400

Hydrogen Carbonate

HCO₃^-

500

Peroxide

O₂​^2-​​​

Week 10

100

Iron 3

Fe³⁺

200

Tin 5

Sn⁴⁺

300

Hypochlorite

ClO^-

400

Dichromate

Cr₂O₇^2-

500

Sulfite

SO₃^2-