Question

what is the name of this ionic compound?
pbcro₄
refer to a periodic table and a list of polyatomic ions.
lead(iv) dichromate lead(iv) chromate
lead(ii) chromate lead(ii) dichromate

Explanation:

• First, identify the cation and anion. The cation is \(Pb^{2 +}\) (lead ion). Since lead can have multiple oxidation states (\(+2\) and \(+4\)), we need to determine its charge.
• The anion is \(CrO_{4}^{2-}\) (chromate ion, not dichromate ion \(Cr_{2}O_{7}^{2-}\)).
• Using the charge balance in the compound \(PbCrO_{4}\), let the charge of \(Pb\) be \(x\). In \(PbCrO_{4}\), we have \(x+( - 2)=0\) (because the compound is neutral). Solving for \(x\), we get \(x = + 2\).

Answer:

lead(II) chromate