The name for the formula KCO3 is potassium carbonate. It is a white salt that can be dissolved in water.
It's potassium carbonate
Potassium Nitrate
There is no molecule by the formula K4I2. The actual formula should be KI and the name should be potassium iodide.
formula Ba3P2
I think that Boa is not a chemical formula.
The formula is for beryllium nitrate.
Beryllium(2+) ion sulfanediide is the name for the formula BeS.
CoCO3
cobalt carbonate
CoCO3, or Cobalt (II) Carbonate is a salt of cobalt. At standard temperature and pressure, it presents as reddish pink crystals.
The question must be CoI3 Cobalt (III) iodide.
Covalent
Co = +2 oxidation C = +4 oxidation O = -2 oxidation
Cobalt carbonate contain carbon, oxygen and cobalt.
CoCO3 --> CoO + CO2 It's balanced and as Cobalt (II) carbonate.
CoCO3 (Cobalt II carbonate) would be a weak base.
The name of the formula Sb4O6 is Tetraantimony Hexoxide.
Diphosphorus Pentoxide is the name of the formula P2O5.
COBALT CARBIDE OZIDE