(NH4)2SO4
Fe2S3
Calcium Chloride
Cu2+ + I- --> Cu2I The compound created is Copper(I) Iodide
The compound is lead sulfide.
PbS2
For example a calcium phosphate as Ca3(PO4)2.
chromium (II) chloride. its formula is CrF2
hydrochloric acid HCl
0
a square minus b square
2H
This formula is Na3PO4.