Claim: Overpotential for various electrode materials such as silver, aluminum, and gold, one of the least reactive chemical elements, varies.
Evidence: It is one of the least reactive chemical elements and is solid under standard conditions. Activation overpotential for the evolution of hydrogen, oxygen and chlorine on various electrode materials at 25 °C Silver −0.59 V +0.61 V Aluminium −0.58 V Gold −0.12 V +0.96 V