Copper, silver and gold are collectively called as `"…............." ` metals.

Answer

**Step-by-Step Solution:**

1. **Identify the Metals**: The metals in question are Copper (Cu), Silver (Ag), and Gold (Au).

2. **Understand Their Grouping**: These three metals belong to the same group in the periodic table, specifically Group 11.

3. **Common Characteristics**: Copper, Silver, and Gold share similar properties, such as high conductivity, malleability, and ductility, which make them suitable for various applications, especially in the making of coins and jewelry.

4. **Terminology**: The term used to collectively refer to Copper, Silver, and Gold is "Coinage Metals." This name arises from their historical use in minting coins.

5. **Conclusion**: Therefore, the answer to the question is that Copper, Silver, and Gold are collectively called "Coinage Metals."

**Final Answer**: Copper, Silver, and Gold are collectively called "Coinage Metals."

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