Question

What is the formula unit for a compound made from Pb4+ and oxygen?

Answer 1

Maybe Lead and Oxygen?

Answer 2

Answer: The formula unit of compound made up from $Pb^{2+}$ and oxygen is $PbO_2$.

Explanation:

$Pb^{4+}+O^{2-}\rightarrow PbO_2$

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 $PbO_2$.

Refer to the image attached.