Beryllium shows different properties from rest of the alkaline earth metals because of its small atomic and ionic size, high electronegativity and high polarising power.But beryllium shows similarities in properties to the second member of the next group i.e. aluminium on account of similar atomic and ionic size and nearly same polarising power
Which of the following statements is false ?

Options

A. Both `Be(OH)_2` and `Al(OH)_3` dissolve in excess of alkali to give beryllate ion `[Be(OH)_4]^(2-)` and aluminate ion `[Al(OH)_4]^(-)` respectively
B. Chlorides of Be and Al are soluble in organic solvents and are
strong Lewis acid.
C. Be and Al have strong tendency to form complexes with
`F^-` ligands
D. The chlorides of Be and Al have `Cl^-` bridged structure in
liquid phase

Explanation

To solve the question regarding the properties of Beryllium and its comparison with Aluminium, we need to evaluate the given statements one by one to identify which one is false.

### Step-by-Step Solution:

1. **Understanding Beryllium's Unique Properties**:
- Beryllium (Be) differs from other alkaline earth metals due to its small atomic and ionic size, high electronegativity, and high polarizing power.
- These properties lead to distinct chemical behaviors compared to other group 2 elements.

2. **Comparing Beryllium with Aluminium**:
- Beryllium shows similarities with Aluminium (Al) because they have similar atomic and ionic sizes and nearly the same polarizing power.
- This similarity allows us to compare their chemical behaviors.

3. **Evaluating the Statements**:
- **Statement 1**: "Beryllium hydroxide and aluminium hydroxide dissolve in excess of alkali to give beryllate ion and the aluminate ion respectively."
- This statement is **true**. Both hydroxides react with excess alkali to form their respective ions.

- **Statement 2**: "Chlorides of Beryllium and Aluminium are soluble in organic solvents and are strong Lewis acids."
- This statement is **true**. Both BeCl2 and AlCl3 are covalent and act as Lewis acids due to their electron deficiency.

- **Statement 3**: "Beryllium and Aluminium have a strong tendency to form complexes with F⁻ ligands."
- This statement is **true**. Both elements can form complexes with fluoride ions due to their small size and high charge density.

- **Statement 4**: "The chlorides of beryllium and aluminium have Cl⁻ bridge structure in the liquid phase."
- This statement is **false**. The bridging structure is observed in the vapor phase, not in the liquid phase.

4. **Conclusion**:
- The false statement among the options provided is **Statement 4**.

### Final Answer:
The false statement is: **"The chlorides of beryllium and aluminium have Cl⁻ bridge structure in the liquid phase."**

---