Science Quiz / Anions of (-2) Oxidation State

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Can you name the Anions of (-2) Oxidation State?

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Score 0/18 Timer 10:00
HintAnswer
CO3
CrO4
CN2
Cr207
MnO4
MoO4
HPO4
C2O4
O2
HintAnswer
S2O7
SiO3
SnO3
SO4
SO3
C4H4O6
B4O7
S2O3
SeO4

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