Question

name the compound baso₄. options: barium sulfate, barium tetrasulfate, barium monosulfur tetraoxygen, barium(ll) sulfate

Explanation:

To name the compound \( \text{BaSO}_4 \), we analyze the ions. \( \text{Ba}^{2+} \) is the barium ion, and \( \text{SO}_4^{2-} \) is the sulfate ion. For ionic compounds with polyatomic ions, we use the name of the cation (barium) followed by the name of the polyatomic anion (sulfate). Barium has a fixed charge of \( +2 \), so we don't need to use Roman numerals (eliminating "barium(II) sulfate"). The formula \( \text{BaSO}_4 \) has one \( \text{Ba}^{2+} \) and one \( \text{SO}_4^{2-} \), so "barium sulfate" is correct. "Barium tetrasulfate" would imply multiple sulfur atoms incorrectly, and "barium monosulfur tetraoxygen" is a covalent - naming style which is wrong for this ionic compound with a polyatomic ion.

Answer:

A. barium sulfate