HgI2 (with the '2' small subscript - ie below the line)
The chemical formula of mercury(II) nitrate is Hg(NO3)2.
The chemical formula for iron(II) iodide is FeI2. It consists of one iron (Fe) ion with a +2 charge and two iodine (I) ions with a -1 charge each.
Sodium + Iodine ----> Sodium Iodide2 Na + I2 ----> 2 NaI
Copper iodide is a chemical compound composed of copper and iodine atoms. Its chemical formula is CuI.
The chemical formula for mercury(II) dichromate is HgCr2O7.
The chemical formula for barium ions is Ba2+ and for iodide ions is I-.
The chemical formula of mercury(II) nitrate is Hg(NO3)2.
Equation: Pb(NO3)2 + KI ----> PbI2 + KNO3
The chemical formula for mercury phosphate is Hg3(PO4)2.
The chemical formula for iron(II) iodide is FeI2. It consists of one iron (Fe) ion with a +2 charge and two iodine (I) ions with a -1 charge each.
The chemical formula of calcium iodide is CaI2. Written ionically: Ca2+(I-)2 or normally written as CaI2, without ionic charges.
Sodium + Iodine ----> Sodium Iodide2 Na + I2 ----> 2 NaI
The chemical formula for mercury(I) phosphide is Hg3P2.
Copper iodide is a chemical compound composed of copper and iodine atoms. Its chemical formula is CuI.
Since mercury can be either a 1+ ion called mercury(I), or a 2+ ion called mercury(II), there are two possibilities.Formulaspotassium chloride is KClpotassium iodide is KImercury(I) chloride is HgClmercury(I) iodide is HgImercury(II) chloride is HgCl2mercury(II) iodide is HgCl2Equation with Mercury(I)KCl + HgI --> HgCl + KIEquation with Mercury(II)2KCl + HgI2 --> HgCl2 + 2KI
The chemical formula for mercury(II) dichromate is HgCr2O7.
The chemical formulas of mercury nitrates are Hg(NO3)3 Hg(NO3)2.