Which transition metal group is known as coinage metals?

group of Cu

The correct answer is Option (4) → group of Cu

Coinage metals are the transition metals that have historically been used to make coins due to their low reactivity, high malleability, and good electrical conductivity. These metals belong to Group 11 of the periodic table.

Group 11 elements are: (Copper, Silver, Gold). -- These metals show similar properties:

• High electrical conductivity

• Resistance to corrosion

• Good malleability and ductility

• Occur partly in native state

Because copper, silver, and gold were widely used for making coins in ancient civilizations, this group is called the coinage metals. Thus, the transition metal group known as coinage metals is the group of copper (Group 11).