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Chapter 2: Problem 91

The Group \(1 \mathrm{~B}\) metals, \(\mathrm{Cu}, \mathrm{Ag},\) and \(\mathrm{Au},\) are called coinage metals. What chemical properties make them specially suitable for making coins and jewelry?

Short Answer

Expert verified
Group 1B metals, Copper, Silver, and Gold are suitable for making coins and jewelry due to their chemical inactivity which prevents them from reacting readily with elements and substances they come across thus preventing corrosion. Their malleability and ductility allow for various designs and shapes in jewelry and coins making.

Step by step solution

01

Exploring Chemical Properties

Firstly, it's important to know that Group 1B metals are Copper(Cu), Silver(Ag), and Gold(Au). These metals are known to have unique chemical properties. One prevalent property is that they are all relatively inactive chemically. This means they don't readily combine with other elements to form compounds. This inactivity is due to the fact that they have filled d-orbitals, which makes it harder for other atoms to react with them. They are also known to be malleable and ductile, meaning they can be reshaped without breaking, and can be drawn into wires respectively.
02

Role in Coin and Jewelry Making

Now to tie these properties to coin and jewelry making. Coins and jewelry are often handled and subjected to harsh conditions. Therefore, they need to be made of materials that will not react readily with elements in the air (for example, oxygen and sulfur) and substances they come across. This prevents corrosion and ensures the coins and jewelry maintain their appearance over time. The malleability of these metals allows for the making of intricate designs on jewelry and various shapes of coins. While their ductility allows them to be drawn into delicate and intricate designs for jewelry

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