Question

what is the name of this compound? ca2o3

Explanation:

The correct formula for calcium oxide - related compounds should have calcium (Ca) with a +2 oxidation state and oxygen (O) with a - 2 oxidation state. The proper way to write calcium - oxygen compounds is based on charge - balance. The formula given, Ca2O3, is incorrect as written. If it were a correct formula, calcium is a metal and oxygen is a non - metal, so it would be an ionic compound named calcium oxide. But the correct formula for calcium oxide is CaO. If we assume it's a mis - written formula and we consider the correct valencies, a possible correct formula could be CaO or CaO2 (calcium peroxide). However, if we consider the most common calcium - oxygen compound, it's calcium oxide.

Answer:

The formula Ca2O3 is incorrect. The common calcium - oxygen compound is calcium oxide (CaO).