Write the balanced chemical equation, write the overall ionic equation, identify the spectator ions and possible precipitates, and write the net ionic equation for each of the following reactions.
mercury (ii) chloride (aq) + potassium sulfide (aq) =

Overall: HgCl2(aq) + K2S(aq) --> HgS(s) + 2KCl(aq)
spectator ions: K+ and Cl-
precipitate: HgS
net ionic: (Hg^2+) + (S^2-) --> HgS     I put parentheses to make it less messy and confusing. When i put a ^, that means that the following are in the exponent position(2+ or 2-)

No. an alpha particle is a pair of protons and a pair of neutrons, i.e. a helium