Question

Why is CO3 called carbonate and not carbon trioxide?

Answer 1

Carbonate ((CO2−3CO32−)) Is a radical. A radical is a group of atoms that behave as a unit and cannot be seperated easily. Basically it behaves like an atom. It has 2 free electrons. It is found commonly in limestone. It cannot exist on its own and will be found bonded to metal in group I and II of the periodic table. The name of the compound formed starts with the name of the metal it is bonded to then carbonate, e.g. calcium carbonate, sodium carbonate and so on. The use will depend on the metal it is bonded to.

Answer 2

Hey mate..!!

Well , the question makes sense , right? ...
Although I haven't thought on this subject but According to me it's because C03 can't itself exist and the Carbonate is CO3 with a negative charge...And so it can't be called Oxygen Trioxide....
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Hope this helps....✌️✌️