In order of highest conductivity to lowest conductivity, the sequence is:

silver,copper, gold

copper, silver,gold

gold, silver, copper

silver, gold, copper

Answer:

silver,copper, gold




The people who answered it right were:

WØRI
W5ZAO
W4GSM
N2BC
Hugh Jass
G4AXX
Ed - N3LHB
w9bea
W8EJO
Hanes Skidmoore
k6yp
cra28016
J.C.

Thanks to everyone who gave it a try.