Which of the following sets of metals apart from having good conductivity of heat and electricity are also called coinage metals and belong to the same group as well?

Au, Ag, Cu, are group 11 elements apart from being metals having good conductivity of heat and electricity, are also called coinage metals.

Group 11 is composed of copper (Cu), silver (Ag), and gold (Au). Silver and Au belong to the so-called noble metals.

All these metals occur in variable oxidation stages, mainly +1, and +2, these metals are generally also named as “coinage metals”. 

These metals are also known for their highly conductive nature of heat and electricity.