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| Name | Mastery | Learn | Test | Matching | Spaced | 
|---|
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Copper
1+, 2+
Cobalt
2+, 3+
Tin
2+, 4+
Iron
2+, 3+
Nickel
1+, 2+
Silver
1+
Manganese
2+, 3+
Zinc
2+
Lead
2+, 4+
Chromium
2+, 3+
Cadmium
2+
Mercury
2+
Hg₂²⁺
1+