A binary compound is a chemical compound that contains only two different elements. For example, water (H2O) is a binary compound composed of hydrogen and oxygen, while carbon dioxide (CO2) is a binary compound composed of carbon and oxygen.

Binary compounds are typically formed by the reaction of two elements in their elemental forms. For example, water is formed by the reaction of hydrogen gas and oxygen gas, while carbon dioxide is formed by the reaction of carbon and oxygen gas.

Binary compounds can also be formed by the reaction of an element with a compound that contains the other element. For example, sodium chloride (NaCl) can be formed by the reaction of sodium metal and chlorine gas, or by the reaction of sodium hydroxide (NaOH) and hydrochloric acid (HCl).

Tertiary Compound:

A tertiary compound is a chemical compound that contains three different elements. For example, chloroform (CHCl3) is a tertiary compound composed of carbon, hydrogen, and chlorine, while sulfuric acid (H2SO4) is a tertiary compound composed of hydrogen, sulfur, and oxygen.

Tertiary compounds are typically formed by the reaction of three elements in their elemental forms. For example, chloroform is formed by the reaction of carbon, hydrogen, and chlorine gas, while sulfuric acid is formed by the reaction of hydrogen, sulfur, and oxygen gas.

Tertiary compounds can also be formed by the reaction of two compounds that contain different elements. For example, potassium nitrate (KNO3) can be formed by the reaction of potassium hydroxide (KOH) and nitric acid (HNO3).