Question

fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table:

some ionic compounds

cation	anion	empirical formula	name of compound
$mg^{2+}$	$i^{-}$
$cs^{+}$	$p^{3 - }$
$ba^{2+}$	$f^{-}$

Explanation:

Step1: Determine formula for $K^+$ and $S^{2 -}$

Balance charges. 2 $K^+$ for 1 $S^{2 -}$. Formula is $K_2S$. Name is potassium sulfide.

Step2: Determine formula for $Mg^{2+}$ and $I^-$

Balance charges. 1 $Mg^{2+}$ for 2 $I^-$. Formula is $MgI_2$. Name is magnesium iodide.

Step3: Determine formula for $Cs^+$ and $P^{3 -}$

Balance charges. 3 $Cs^+$ for 1 $P^{3 -}$. Formula is $Cs_3P$. Name is cesium phosphide.

Step4: Determine formula for $Ba^{2+}$ and $F^-$

Balance charges. 1 $Ba^{2+}$ for 2 $F^-$. Formula is $BaF_2$. Name is barium fluoride.

Answer:

cation	anion	empirical formula	name of compound
$Mg^{2+}$	$I^-$	$MgI_2$	magnesium iodide
$Cs^+$	$P^{3 -}$	$Cs_3P$	cesium phosphide
$Ba^{2+}$	$F^-$	$BaF_2$	barium fluoride