Compare the stuctures of `H_(2)O` and `H_(2)O_(2)`.

Explanation

In water , O is `sp^(3)` -hydridized . Due to stronger lone pair-lone pair repulsions than bond pair-bond pair repulsions, the HOH bond angle decreases from `109.5^(@) ` to `104.5^(@)` . Thus, water is a bent molecule . `H_(2)O_(2)` has a non-planar structure . The two oxygen atoms are linked to each other by a single covalent bond (i.e., peroxide bond) and each oxygen is further linked to a hydrogen atom by a single covalent bond.d The two O-H bonds are, however, in different planes. The dihedral angle between the two planes being `111.5^(@)` in the gas phase . Thus, the structure of `H_(2)O_(2)` is like that of an open book.