1. The problem statement, all variables and given/known data A coord. compound of mercury (II) is found to contain the sulfate ion and the potassium ion as well as Hg+2. Ba(NO3)2 solution is added to a water solution of this compound, but there is no precipitate. If the coord. # is 4, and a H20 solution of the compound shows an electrical conductivity equal to 7 ions per formula unit, what is the formula? 2. Relevant equations N/A 3. The attempt at a solution [Hg(SO4)4]K2 not sure ???