Which of the following molecules has polar bonds but is a nonpolar molecule?

a. H₂

b. H₂O

c. NH₃

d. NaCl

e. CO₂

Can anyone explain this one?

H2: non polar bond. non polar molecule

H2O: polar bonds, but there is a angle between 2 H-O bonds. so it's a polar molecule

NH3: polar bonds, but it's a stereochemical structure, like a pyramid with triangle base, N is the vertex. polar molecule.

NaCl: polar bond, polar molecule. (ion bond)

CO2: 2 O atoms are at two sides of C atom horizonally. giving CO2 a symmerical structure. it's nonpolar molecule with 2 polar bonds.

Only NaCl has a polar bond as Na and Cl have got a big difference in electronegativity.