First it is necessary a correct chemical analysis of this compond, with the goal to establish the empirical chemical composition.
Formula: Ba3N2
Because Copper is a transition metal with variable velancies. Either +2 or +3 so unless the velancy is given you can't use the easy way out:)
Calcium oxide is CaO.
Mercury oxides are: HgO and Hg2O.
This the cuprous oxide, CuO.
Silver oxide is an ionic compound so its molecular and empirical formula is same Ag2O
Formula: Ba3N2
The chemical formula for Calcium oxide is CaO. A single calcium atom bonds with a single oxygen atom to make this compound, and a link can be found below for more information.CaO
Al2O3.
Because Copper is a transition metal with variable velancies. Either +2 or +3 so unless the velancy is given you can't use the easy way out:)
MnO
SiO2
Since zinc oxide is an ionic lattice when solid, it does not have a structural formula. Its empirical formula is ZnO.
Calcium oxide is CaO.
from my work and looking around i think it is TeO2
BrO2
Calcium = Ca Carbon = C oxide = O(2-) Calcium carbonate = CaCO3