Name of each of the following binary compounds, all of which are composed of a metal or nonmetal BaO

a) BaO is barium oxide. Barium has oxidation number + 2 and oxygen has oxydation number - 2.

b) K₂S is potassium sulfide. Potassium oxidation number is + 1 and sulfur - 2.

c) CaCl₂ is calcium chloride. Calcium has + 2 and chlorine - 1 oxidation number.

d) Cs₂S is cesium sulfide. Cesium has + 1 oxidation number.

e) Al₂O₃ is aluminium oxide. Aluminium has + 3 oxidation number.

f) CaBr₂ is calcium bromide. Bromine has - 1 oxydation number.

g) SrI₂ is strontium iodide. Strontium is + 2 and iodine is - 1.

h) Mg₃N₂ is magnesium nitride. Nitrogen has - 3 oxidation number.