The negative ion found in milk of magnesia would be [tex]OH^-[/tex]
Milk of magnesia
Milk of magnesia is otherwise known as magnesium hydroxide.
Magnesium hydroxide has the chemical formula, [tex]Mg(OH)_2[/tex].
The chemical formula can be broken down in ion form as follows:
[tex]Mg^{2+}[/tex] + [tex]OH^-[/tex] [tex]--- > Mg(OH)_2[/tex]
Thus, the negative ion is [tex]OH^-[/tex] while the positive ion is [tex]Mg^{2+}[/tex].
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