Answer:
See explanation
Explanation:
It is commonplace to put polyatomic ions in parenthesis when they are more than one in a compound. A typical example here is calcium phosphate- Ca3(PO4)2.
When a compound contains more than a single polyatomic ion of the same type,a parentheses is placed around the formula of that ion then a subscript is used to indicate how many of that particular ion are in the compound.
