Answer: The formula unit of compound made up from [tex]Pb^{2+}[/tex] and oxygen is [tex]PbO_2[/tex].
Explanation:
[tex]Pb^{4+}+O^{2-}\rightarrow PbO_2[/tex]
When lead ion with '4+' charge binds with an oxygen anion with '2-'it forms lead(IV) oxide. The formula unit of the lead (IV) oxide according to criss cross method is written as [tex]PbO_2[/tex].
Refer to the image attached.
