1. In the water vapour, the molecule of water has a bent shape with a bond angle of approximately 104.5° and the bond length of OH bond is 95.7 pm. The structure can be shown as:

2. In gas as well as the solid state hydrogen peroxide possess a non-planar structure and the dihedral angle in the gas and solid state is 111.5° and 90.2° respectively. The structure can be shown as: