Question

which one of the compnd below is molecular
NaCl,AlBr3,Co2,NH4Cl,Na2O

Answer 1

Molecular Compounds are two non-metals or a non-metal and a metaloid. So there is a type of border thing on the periodic table, the ones on the right are non-metals and the ones on the left are metals. As for the ones along the border they are metaloids. So NA is a metal and CL is a nonmetal so that would not work. Al is a metal and Br is a metal as well. Now N, H, and Cl are considered non-metals because they are on the right side of the table border. And last Na as we stated before is a metal while O is a non-metal so that would not work. Here a table for you the black line is the border.