Which among the following metal is highest electrical conductivity as well as highest thermal conductivity?
Q. Which among the following metal is highest electrical conductivity as well as highest thermal conductivity?
Answer: Silver
Notes: Silver is the metal with the highest electrical and thermal conductivity. It has only one valence electron, which can move around with little resistance. This makes silver a great conductor of electricity and heat. Silver's thermal conductivity is 430 wK/m, which is higher than copper (400 wK/m), aluminum (235 wK/m), and brass (109 wK/m). Silver's low contact wear resistance and excellent optical reflectivity make it ideal for coating contacts, mirrors, and conductors in telecom applications. Impurities can decrease a conductor's conductivity. For example, sterling silver is not as good of a conductor as pure silver. Oxidized silver is not as good a conductor as untarnished silver.

 

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