Which of the following is a molecular compound? H2S, MgBr2, Fe2O3, none of these
Read the first paragraph of the link below. That will tell you which to pick.
https://www.google.com/search?q=what+is+a+molecular+compound&ie=utf-8&oe=utf-8
https://www.google.com/search?q=what+is+a+molecular+compound&ie=utf-8&oe=utf-8