All three are malleable, ductile, and good conducters.
They are metals
gold,silver and copper are the most common
Copper, gold, and silver are some common metallic minerals.
All are metals and used to make coins.
Some metals that are not silver gray in color include gold (yellow), copper (orange-red), brass (yellow-brown), and bronze (reddish-brown).
Out of copper, silver, and gold, silver has the highest conductivity.
Not a meaningful question. Gold coins were made from gold and copper without any silver in them. Silver coins were made from silver and copper without any gold.
Copper
Gold, Silver and Copper belong to the native elements mineral group.
It isn't, gold(Au) , silver(Ag) and copper(Cu) are all separate elements. But if you're talking about when they add copper or silver to gold, it's to harden it, so you can't bend it in your hands.
Gold
Silver is harder than gold but softer than copper.