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.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a