Question

which of the following is an example of a covalent compound? calcium oxide, cao potassium chloride, kcl ammonia, nh₃ sodium chloride, nacl

Explanation:

Covalent compounds are formed by the sharing of electrons between non - metal atoms. Ammonia ($NH_3$) is composed of non - metals nitrogen and hydrogen which share electrons to form covalent bonds. Calcium oxide ($CaO$), potassium chloride ($KCl$), and sodium chloride ($NaCl$) are ionic compounds formed by the transfer of electrons between a metal and a non - metal.

Answer:

C. Ammonia, $NH_3$