Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4.
APPARENTLY SrNO6, SrSO4 , Sr3PO8 is wrong
To determine the correct formulas for the compounds that form from Sr (strontium) and the given polyatomic ions, we need to consider the charges of these ions and balance them with the charge of strontium.
1. NO₃⁻ (nitrate ion):
Strontium (Sr) has a charge of +2, and the nitrate ion (NO₃⁻) has a charge of -1. To balance the charges, we need to have two nitrate ions for every strontium ion to achieve a neutral compound. Therefore, the formula for the compound is Sr(NO₃)₂.
2. SO₄²⁻ (sulfate ion):
Strontium (Sr) has a charge of +2, and the sulfate ion (SO₄²⁻) has a charge of -2. To balance the charges, we only need one sulfate ion for every strontium ion. Thus, the formula for the compound is SrSO₄.
3. PO₄³⁻ (phosphate ion):
Strontium (Sr) has a charge of +2, and the phosphate ion (PO₄³⁻) has a charge of -3. To balance the charges, we need three phosphate ions for every two strontium ions. Consequently, the formula for the compound is Sr₃(PO₄)₂.
Therefore, the correct formulas for the compounds formed from Sr and the given polyatomic ions are:
1. Strontium nitrate: Sr(NO₃)₂
2. Strontium sulfate: SrSO₄
3. Strontium phosphate: Sr₃(PO₄)₂