If a solid non-metal X forms oxide of type `X_(2)O_(5)`,then the formula of its corresponding chloride is ___________ .

Options

A. `XCl_(3)`
B. `XCl_(5)`
C. `X_(2)Cl_(5)`
D. `X_(2)Cl_(2)`

Explanation

To find the formula of the corresponding chloride for the non-metal X that forms the oxide X₂O₅, we can follow these steps:

### Step 1: Determine the Valency of X
The oxide is X₂O₅, which means there are 2 atoms of X and 5 atoms of oxygen. The charge of one oxygen atom is -2. Therefore, the total charge contributed by the oxygen atoms is:
\[ 5 \times (-2) = -10 \]

To balance this negative charge, the total positive charge from X must be +10. Since there are 2 atoms of X, we can find the charge on each X atom:
\[ \text{Charge on each X} = \frac{+10}{2} = +5 \]
Thus, the valency of X is +5.

### Step 2: Determine the Valency of Chloride
The chloride ion (Cl) has a charge of -1.

### Step 3: Use the Crisscross Method to Determine the Formula
Now, we will use the crisscross method to determine the formula of the chloride. The valency of X is +5, and the valency of Cl is -1. We will cross the charges:
- The charge of X (+5) becomes the subscript for Cl.
- The charge of Cl (-1) becomes the subscript for X.

This gives us:
\[ \text{XCl}_{5} \]

### Final Answer
The formula of the corresponding chloride is **XCl₅**.

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