multiple - choice question\nwhat is the name of mg(oh)2?\nmagnesium (ii) hydroxide\nmagnesium hydroxide…

Brief Explanations:

Magnesium has a fixed +2 oxidation state in most of its compounds and is a main - group metal. For main - group metals with a fixed oxidation state, the oxidation state is not indicated in the name of the compound. The compound consists of magnesium ion ($Mg^{2+}$) and hydroxide ion ($OH^-$). So the name is magnesium hydroxide.

Answer:

C. magnesium hydroxide