Question

Which formulas represent two polar molecules?
(1) CO2 and HCl (3) H2O and HCl
(2) CO2 and CH4 (4) H2O and CH4

Answer 1

The correct answer is shown in option 3. Water and hydrochloric acid are polar molecules. These molecules are polar because of the presence of bonds that are partially ionic or polar covalent bonds. Other examples are hydrogen fluoride and ammonia.