Statement-1: `B(OH)_(3)` behaves as a lewis acid.
Statement-2: Second ionisation is very much difficult in boric acid.

Options

A. (a) Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1
B. (b) Statement-1 is true, statement-2 is true, statement-2 is not correct explanation for statement-1
C. (c) Statement-1 is true, statement-2 is false
D. (d) Statement-1 is false, statement-2 is true

Answer

To analyze the statements given in the question, we will evaluate each statement step by step.

### Step 1: Evaluate Statement 1
**Statement 1:** B(OH)₃ behaves as a Lewis acid.

- **Explanation:** Boric acid (B(OH)₃) has boron as its central atom. Boron has an atomic number of 5, with an electronic configuration of 1s² 2s² 2p¹. In B(OH)₃, boron forms three bonds with hydroxyl (OH) groups. Each bond involves sharing of electrons, leading to a total of 6 electrons around boron (3 from the bonds with OH groups).
- **Conclusion:** Since boron has only 6 electrons in its valence shell, it is electron deficient and can accept a pair of electrons, which classifies it as a Lewis acid. Thus, Statement 1 is **True**.

### Step 2: Evaluate Statement 2
**Statement 2:** Second ionization is very much difficult in boric acid.

- **Explanation:** Ionization refers to the removal of electrons from an atom. The first ionization of boron (from B(OH)₃) involves removing one electron from the 2p subshell, resulting in a B⁺ ion. The electronic configuration of B⁺ is 1s² 2s² 2p⁰. The second ionization involves removing an electron from the stable B⁺ ion, which has a filled 2s subshell (1s² 2s²). Removing an electron from a stable configuration requires significantly more energy.
- **Conclusion:** Therefore, the second ionization is indeed much more difficult compared to the first ionization. Thus, Statement 2 is also **True**.

### Step 3: Determine the Relationship Between the Statements
- **Analysis:** While both statements are true, Statement 2 does not serve as a correct explanation for Statement 1. Statement 1 is about the Lewis acidity of boric acid, while Statement 2 discusses the difficulty of the second ionization, which is a separate concept.

### Final Conclusion
- Both statements are true, but Statement 2 does not explain Statement 1. Therefore, the correct option is:
**Option B:** Statement 1 is true, Statement 2 is true, but Statement 2 is not the correct explanation for Statement 1.

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