An inorganic Lewis acid `(X)` shows the following reactions :
(a) It fumes in moist air.
(b) The intensity of fumes increase when a rod dippod in `NH_(4) OH` is brought near it.
( c) To an aqueous solution of `(X)`, addition of `NH_(4)Cl` and `NH_(4)OH` gives a precipitate which dissolves in `NaOH` solution.
(d) An acidic solution of `(X)` does not give a precipitate with `H_(2) S`.
Identify `(X)` and gives chemical reactions for `(a)` to `(d)`.

Explanation

To identify the inorganic Lewis acid \( (X) \) and provide the chemical reactions for the given scenarios, we will analyze each reaction step by step.

### Step 1: Analyze the first reaction
**(a)** The acid fumes in moist air.

- **Interpretation**: A compound that fumes in moist air typically releases hydrochloric acid (HCl) gas when it reacts with water. This suggests that \( (X) \) is likely a chloride salt.

### Step 2: Analyze the second reaction
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