COMEDK2022ChemistryHydrogen
Which of the following statements is incorrect for H ₂ O ₂ structure?
Options
- AIt has an open book structure.
- BIts dihedral angle is 180^ .
- CIt O - O bond length is 145.8 and O - H is 98.8 .
- DAngle between both planes is 90.2 .
Correct answer
B. Its dihedral angle is 180^ .
Step-by-step solution
The structure of hydrogen peroxide ( H ₂ O ₂ ) is non-planar and is commonly described as an open book structure. In the gaseous phase, the dihedral angle between the two O-H planes is approximately 111.5^ , not 180^ . A dihedral angle of 180^ would imply a planar structure, which is not the case for H ₂ O ₂ . The O - O bond length in H ₂ O ₂ is 145.8 pm and the O - H bond length is 98.8 pm. The dihedral angle (angle between the two planes containing the O-H bonds) in the solid state is 90.2^ . Since the dihedral a