Answer:
Binary compounds of potassium and sulfur:
K₂S
Binary compounds of silver chlorine:
AgCl
Binary compounds of calcium and oxygen:
CaO
Binary compounds of aluminium and iodine:
AlI₃
Binary compounds of barium and nitrogen:
Ba₃ N₂
Binary compounds of sodium and selenium:
Na₂Se
Explanation:
Binary compounds:
The compounds which are made up of the atoms of only two elements are called binary compounds.
For example:
The following compounds are binary:
HCl
H₂O
NH₃
HCl is binary because it is composed of only hydrogen and chlorine. Ammonia is also binary compound because it is made up of only two elements nitrogen and hydrogen.
water is also binary because it is also made up of only two elements hydrogen and oxygen.
Binary compounds of potassium and sulfur:
K₂S
The oxidation state of potassium is +1 and sulfur is -2 so two atoms of potassium will combine with one atom of sulfur.
Binary compounds of silver chlorine:
AgCl
The oxidation state of silver is +1 and chlorine is -1. Both combine to form silver chloride.
Binary compounds of calcium and oxygen:
CaO
calcium oxide is formed by calcium and oxygen. The oxidation state of calcium is +2 and oxygen is -2.
Binary compounds of aluminium and iodine:
AlI₃
The oxidation state of aluminium is +3 and iodine is -1 so three atoms of iodine will combine with one atom of aluminium.
Binary compounds of barium and nitrogen:
Ba₃ N₂
Barium nitride is formed by barium and nitrogen. The oxidation state of nitrogen is -3 and barium is +2.
Binary compounds of sodium and selenium:
Na₂Se
The oxidation state of selenium is -2 ans sodium is +1 so two atoms of sodium will combine with one atom of selenium.
