Answer:
The correct answer is [tex]Na_2SO_4[/tex].
Explanation:
Given polyatomic ions:
1) Sulfate =[tex] SO_{4}^{2-}[/tex]
2) Phosphate = [tex]PO_{4}^{-3}[/tex]
3) Hydroxide =[tex]OH^-[/tex]
The formula of Sodium sulfate will be:
[tex]2Na^++ SO_{4}^{2-}\rightarrow Na_2SO_4[/tex]
Sodium carries 1+ charge and and sulfate ion carries 2-charge. In order to neutralize negative charge on sulfate ion two sodium ions will be needed.
