When in the 1+ oxidation state, Mercury does not occur as a lone Hg+ ion. Instead it forms the polyatomic ion Hg22+.
As a result, this ion will bond with two bromide (Br-) ions.
AgBr is silver bromide. Ag2Br does not exist. Hg2Br2 is mercury(I) bromide.
hg2br2
Hg2CO3 + CaBr2 ---> CaCO3 + Hg2Br2
Mercury(II) bromide
No. Only 2 elements are liquid at room temperature, these are Mercury and Bromine. Mercury(II) bromide or mercuric bromide is the chemical compound composed of mercury and bromine with the formula HgBr₂. This white crystalline solid
AgBr is silver bromide. Ag2Br does not exist. Hg2Br2 is mercury(I) bromide.
hg2br2
Some examples of insoluble bromide compounds include silver bromide (AgBr), lead(II) bromide (PbBr2), and mercury(I) bromide (Hg2Br2). These compounds do not dissolve easily in water and form solid precipitates when bromide ions are combined with the corresponding metal ions.
Hg2CO3 + CaBr2 ---> CaCO3 + Hg2Br2
HgBr2 is mercury II bromide or mercuric bromide.
Mercury(I) bromide formula is Hg2Br2Mercury(II) bromide formula is HgBr2See attached link for more information on mercury bromide.
HgBr2
mercury bromide
HgBr2
Mercury(II) bromide
That is not a valid formula. Mercury (I) bromide is actually Hg2Br2. Mercury is peculiar in several ways, and one of them is that the +1 mercury ion exists as a dimer instead of an isolated ion.
Mercury (II) Bromide