GK QUESTION#3523
Identify the chemical formula of magnesium hydroxide.
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Answer
D. Mg(OH)₂
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Explanation
Magnesium hydroxide is Mg(OH)₂. One Mg²⁺ ion is balanced by two hydroxide ions, OH⁻. The parentheses show that both oxygen and hydrogen belong to each hydroxide group; the formula represents composition rather than a complete structural drawing.