underwent sharing of electrons or covalent molecular compounds. Then put an (x) mark under polar compounds if the compounds are polar. Do the same with the nonpolar compounds. The first one is done for you. CH4 F2 NO3 Naci CO2 N2 SO4 H2 Cao 02 HCI LiBr C2 H2O Molecular Compound Polar Compound Non-polar Compound 1. CH4