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10 questions from this quiz
Cations (positive ions)
2−2-2−
Iron has a 3+ charge
Zn2+\text{Zn}^{2+}Zn2+
SO42−\text{SO}_{4}^{2-}SO42−
Al2O3\text{Al}_{2}\text{O}_{3}Al2O3
Cl2\text{Cl}_{2}Cl2
Aqueous (dissolved in water)
Never change the subscripts in formulae
Mg(OH)2\text{Mg}(\text{OH})_{2}Mg(OH)2
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