Compare the structures of $H_2O$ and $H_2O_2$.

(N/A) In the gaseous phase, the water molecule $(H_2O)$ has a bent structure with a bond angle of $104.5^{\circ}$. The $O-H$ bond length is $95.7 \, pm$.
Hydrogen peroxide $(H_2O_2)$ has a non-planar structure in both the gas and solid phases. The dihedral angle in the gas phase is $111.5^{\circ}$, while in the solid phase, it is $90.2^{\circ}$.