Answer: Al(OH)₃
Step-by-step explanation:
Formula for aluminum hydroxide
Al³⁺
OH¹⁻
Use the "swap and drop" method. Swap the numbers on the charges and drop them as the subscripts for each element.
Al₁(OH)₃
If the subscript is 1, we do not write 1 in the formula. When a polyatomic is part of the formula and there is more than one, use parentheses around the polyatomic and place the subscript on the outside of the parentheses.
Al(OH)₃