Pb2+ <-- lead ion
SO4 2- <-- sulfate ion.
Putting them together would create: PbSO4.
PbBr2
The chemical formula of lead(II) nitrate is Pb(NO3)2.
The formula for this compound is Rb2S.
The compound formula for ferric sulfate is Fe2(SO4)3.
The chemical compound formula for SULFATE is SO(4). 4 is inside parentheses because it is meant to be written very small below the O. It shows that there is 4 molocules of Oxygen in the compound.
Formula: PbO
Formula: PbS
The compound formula for iron III sulfate is Fe2(SO4)3.
This chemical formula is Pb3P2.
The name of the compound BeSO4 is beryllium sulfate
It would be: PbI2
There is no such compound as silicon sulfate. Do you mean silicon sulfide, SiS2 ?