Answer
magnesium hydroxide: Mg(OH)x_{y}2
Work Step by Step
1. The atomic symbol for magnesium is Mg. Mg has a 2x^{y}+ charge associated with it since it is in the second column of the periodic table.
2. Hydroxide is known as OHx^{y}-
3. When combine the two, you have to cross the charges in order for them to be balanced:
Mgx^{y}2+ OHx^{y}-= Mg(OH)x_{y}2
