Each mineral named here acts as a blend of two carbonate compounds. They may serve as fire retardants because, on heating, they break down to give $\text{CO}_2$. This gas then helps to extinguish the fire. barytocite, $\text{BaCa(CO}_3)_2$ dolomite, $\text{CaMg(CO}_3)_2$ huntite, $\text{Mg}_3\text{Ca(CO}_3)_4$ What is the ranking of fire-retardant effectiveness, from most effective to least effective?
- Adolomite > barytocite > huntite
- Bdolomite > huntite > barytocite
- Chuntite > barytocite > dolomite
- Dhuntite > dolomite > barytocite