Consider the following elements with their electronegativity value:
`{:("Element",A,B,C,D),("Electronegativity (Pauling scale)",3.77,1.12,2.25,3.10):}`
Q. Incorrect statements is:

Options

A. AOH is more acidic than DOH
B. BOH is more basic than COH
C. AB' molecule is predominantly ionic
D. D-OH' bond is more weaker than 'B-OH' bond in polar solvent

Explanation

To determine the incorrect statement among the given options related to the elements and their electronegativity values, we will analyze each statement one by one based on the provided electronegativity values.

### Step 1: Analyze the Electronegativity Values
The electronegativity values given are:
- Element A: 3.77
- Element B: 1.12
- Element C: 2.25
- Element D: 3.10

### Step 2: Evaluate Each Statement
1. **Statement 1**: AOH is more acidic than DOH.
- **Analysis**: Since A has a high electronegativity (3.77), it will attract electrons more strongly, making AOH more likely to donate a proton (H⁺) compared to DOH (with D having an electronegativity of 3.10). This statement is likely **correct**.

2. **Statement 2**: BOH is more basic than COH.
- **Analysis**: B has a very low electronegativity (1.12), while C has a moderate electronegativity (2.25). A lower electronegativity generally indicates a stronger tendency to donate electrons, making BOH more basic than COH. This statement is likely **correct**.

3. **Statement 3**: AB molecule is predominantly ionic.
- **Analysis**: The difference in electronegativity between A (3.77) and B (1.12) is quite large (2.65), which suggests that the bond between A and B will be ionic. This statement is likely **correct**.

4. **Statement 4**: DOH bond is weaker than BOH bond in polar solvent.
- **Analysis**: The electronegativity of D (3.10) is higher than that of B (1.12). Generally, a bond involving a more electronegative atom (like D) would be stronger due to the stronger attraction of electrons. Therefore, this statement is likely **incorrect**.

### Conclusion
The incorrect statement is: **DOH bond is weaker than BOH bond in polar solvent.**