Select the incorrect statement for `H_2O_2` structure

Options

A. It is non planar
B. O–O bond length is more in gaseous state than in solid phase
C. Both OH bond are in different plane
D. O–O–H bond angle in gas phase is more than in solid phase

Answer

To solve the question regarding the incorrect statement for the structure of hydrogen peroxide (H₂O₂), we will analyze each option provided in the video transcript step by step.

### Step 1: Analyze Option A
**Statement:** H₂O₂ is a polar molecule.

**Analysis:**
Hydrogen peroxide (H₂O₂) is indeed a polar molecule because it has a bent structure due to the presence of lone pairs on the oxygen atoms, which creates a dipole moment.

**Conclusion:** This statement is correct.

### Step 2: Analyze Option B
**Statement:** Oxygen-oxygen bond length is more in gaseous state than in solid.

**Analysis:**
In the gaseous state, the oxygen-oxygen bond length in H₂O₂ is approximately 147.4 picometers, while in the solid state, it is about 145.8 picometers. Therefore, the bond length is indeed longer in the gaseous state.

**Conclusion:** This statement is correct.

### Step 3: Analyze Option C
**Statement:** Both OH groups are in different planes.

**Analysis:**
In the structure of hydrogen peroxide, the two hydroxyl (OH) groups are indeed positioned in different planes due to the bent structure of the molecule. This is true for both the gas and solid phases.

**Conclusion:** This statement is correct.

### Step 4: Analyze Option D
**Statement:** The O-O-H bond angle in the gas phase is more than in the solid phase.

**Analysis:**
The bond angle in the gas phase is approximately 94.8 degrees, while in the solid phase, it is about 101.9 degrees. Therefore, the bond angle in the solid phase is actually greater than in the gas phase.

**Conclusion:** This statement is incorrect.

### Final Answer
The incorrect statement for the structure of H₂O₂ is **Option D**.

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