Although both `CO_(2)` and `H_(2)O` are triatomic molecules, the shape of `H_(2)O` molecules in bent while that of `CO_(2)` is linear. Explain this on the basis of dipole moment.

Explanation

The dipole mement studies show that the dipole moment of `CO_(2)` molecule is zero . This is possible only
if ` CO_(2)` is a linear molecule ` ((O = C=O))` so that diple moment of C-O are equal and opposite and
hence cancel out . On the other hand, `H_(2) O ` molecule is found to have a net dipole moment (1.84 D)
thought it contains 2 O-H bonds . This shows that it is a bent molecule