Based upon the ion charge of the following polyatomic ions, predict the formula for the following compounds. sulfate = so4 -2 phosphate = po4 -3 hydroxide = oh- sodium hydroxide na(oh)2 na(oh)3 na2oh naoh

NaOH is the Answer.

Explanation:

By criss crossing the charge numbers, we find the chemical formula of a compound

For example Aluminium chloride

Al has 3+ charge and Cl has 1- charge  

3 becomes the subscript of Cl and 1 becomes the subscript of Al  

So the chemical formula will be

Sodium Hydroxide is NaOH as Na the charge is and as OH, the charge is

Sodium phosphate is as sodium has charge and phosphate has charge.

Sodium sulfate is as sodium has charge and sulfate has charge.

Sodium chloride will be NaCl as sodium has charge and chloride has charge.

Calcium phosphate will be because Calcium possess charge and phosphate has charge.