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 statements, we can follow these steps:

### Step 1: Identify the Lewis Acid
The Lewis acid that fumes in moist air is likely to be **Aluminum Chloride (AlCl3)**. This is because AlCl3 is known to absorb moisture from the air and release HCl gas, which causes the fuming effect.

### Step 2: Reaction of AlCl3 with Moist Air
When AlCl3 is exposed to moist air, it reacts with water to form aluminum hydroxide and hydrochloric acid:
\[
...