D. 7. The formula for the lonic compound lithium phosphate te consists of which of the following? 1u^+ and 1PO_(3) ion 3u^+ ions and 1PO_(4)^3- ion 2u^+ ions and 1PO_(4)^2- ion 2U^ast ions and 1PO_(3)^2- ion

The correct formula for the ionic compound lithium phosphate is $Li_{3}PO_{4}$. This means that the compound consists of 3 lithium ions ($Li^{+}$) and 1 phosphate ion ($PO_{4}^{3-}$). Therefore, the correct answer is:<br /><br />$3Li^{+}$ ions and $1PO_{4}^{3-}$ ion