Valency of silver in `Ag_(2)S` is:

Options

A. 1
B. 2
C. 0
D. 3

Explanation

To determine the valency of silver (Ag) in the compound \( \text{Ag}_2\text{S} \), we can follow these steps:

### Step 1: Identify the known valency of sulfur
The valency of sulfur (S) is known to be 2. This is because sulfur typically forms two bonds to achieve a stable electronic configuration.

### Step 2: Set up the equation for the compound
In the compound \( \text{Ag}_2\text{S} \), we have 2 silver (Ag) atoms and 1 sulfur (S) atom. We can denote the valency of silver as \( X \).

### Step 3: Write the total charge balance
Since the compound is neutral, the total positive charge contributed by silver must equal the total negative charge contributed by sulfur. The equation can be set up as follows:

\[ 2 \times X = 1 \times 2 \]

Here, \( 2 \times X \) represents the total positive charge from the two silver atoms, and \( 1 \times 2 \) represents the total negative charge from the one sulfur atom.

### Step 4: Solve for \( X \)
Now we can solve the equation:

\[ 2X = 2 \]
\[ X = 1 \]

### Step 5: Conclusion
The valency of silver (Ag) in the compound \( \text{Ag}_2\text{S} \) is 1.

### Summary
Thus, the valency of silver in \( \text{Ag}_2\text{S} \) is 1.

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