Although both `CO_(2)` and `H_(2)O` are triatomic molecules, the shaep of `H_(2)O` molecule is bent while that of `CO_(2)` is linear. Explain this on the basis of dipple moment?

Explanation

`CO_(2)` is a linear in which the two C=O are oriented in the opposite directions at an angle of `180^(@)`. The dipole moment of C=O is 2.3 D due to linear structure of `CO_(2)` the bond dipoles of two C=O bonds cancel with each other. Therefore resultant `mu` is zero.
On the other hand `H_(2)O` is polar molecule having dipole moment 1.54 D. Actually `H_(2)O` molecule has bent structure in which O-H bonds are oriented at an angle of `104^(@)5^(1)` and dont cancel the bond moment of each other.