Question

complete this table.

name	empirical formula
barium sulfide

Explanation:

Step1: Determine charge of ions for chromium(II) iodide

Chromium(II) has a charge of $Cr^{2 + }$ and iodide is $I^{-}$. To balance the charges, we need 2 iodide ions for 1 chromium(II) ion.

Step2: Write empirical formula for chromium(II) iodide

The empirical formula is $CrI_{2}$.

Step3: Determine charge of ions for barium sulfide

Barium has a charge of $Ba^{2+}$ and sulfide is $S^{2 - }$. The charges balance in a 1:1 ratio.

Step4: Write empirical formula for barium sulfide

The empirical formula is $BaS$.

Answer:

name	empirical formula
barium sulfide	$BaS$