When mercuric oxide is strongly heated in a hard glass tube, it decomposes, globules of mercury collect in the cooler part of the tube and oxygen gas is evolved. It may be collected over mercury in a...
HgO. The single mercury cation has a +2 charge, and single oxide anion a -2 charge. Mercurous oxide would be Hg2O, ie, the mecurous ion is a dimer, therefore it has two mercury atoms, each with a +1...