The answer to your question is: letter B
Explanation:
Electrolytes are chemical solutions that can conduct electricity in solution. Also, molecules that have ionic bonding are electrolytes (metal attach to a non metal).
Non electrolytes are chemical solutions that do not conduct electricity. Molecules that have covalent bonding are non electrolytes (non metal attach to a non metal).
A) LiIO3 This compound has a metal and non metals, then it is an electrolyte.
B) Cl2 This compound has 2 nonmetals, then it is a non electrolyte.
C) NaI This compound has a metal and a non metal, then it is an electrolyte.
D) KIO This compound has a metal and non metals, then it is an electrolyte.
E) HI This compound has 2 non metals, but it is a strong acid. Then it is an electrolyte.