The valency of gold in AuCl is

Options

A. 1
B. 2
C. 3
D. 4

Answer

To determine the valency of gold (Au) in the compound AuCl, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Elements in the Compound**:
- The compound AuCl consists of two elements: gold (Au) and chlorine (Cl).

2. **Determine the Charge of Chlorine**:
- Chlorine (Cl) is a non-metal and typically has a valency of -1 when it forms compounds. This means that each chlorine atom can accept one electron.

3. **Understand the Neutrality of the Compound**:
- The overall compound AuCl must be neutral, meaning the total positive charge must balance the total negative charge.

4. **Calculate the Charge of Gold**:
- Since there is one chlorine atom with a charge of -1, to balance this and achieve neutrality, gold (Au) must have a charge of +1.

5. **Determine the Valency of Gold**:
- The valency of an element is defined by its combining capacity with other elements. Since gold has a charge of +1 in this compound, we conclude that the valency of gold in AuCl is +1.

### Final Answer:
The valency of gold (Au) in AuCl is **1**.

---