Gold is the most malleable and ductile inspite of it not used in electrical purpose why?
Answers
gold is most malleable and ductile but but not used in electrical purpose because it is a very precious metal .
normal people cannot afford it
Explanation:
But there is another one: the high purity of Au that is readily available. Since impurities hinder dislocation movement they cause embrittlement. With the Ellingham diagram a special property of Au can be understood: Notice the red circle wich highlights the position auf Au2O3 which is already above 0 kJ/mole at 0 K.
Since the dissociation of Au2O3 into Au + O2 leads to an increase of entropy the slope of the Au curve is positive in this diagram like for the other metals. This means that Au will never reach the negative regime and therefore not form oxides which sets Au apart from all other metals. This is the reason that gold is found in the form of nuggets and not as ore where it would mix with other metal oxides. Therefore gold is a very soft material (not just in theory) that can be hammered into thin sheets as thin as 100 nm thickness