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Name: Siddhartha 
Status: student
Grade: other
Country: India
Date: Summer 2014


Question:
My question is why copper has more electrical conductivity compared to Iron? Though they are metals having different crystal structure (copper-FCC and Iron -BCC) what is the exact reason?



Replies:
Hi Siddhartha,

Thanks for the question. In the classical picture of electrical conductivity, the conductivity of a material is proportional to the number of charge carriers (or free electrons) in the material. The free electrons is (roughly) the number of valence electrons in an atom of the material. Copper and iron have different numbers of valence electrons, so you can expect different conductivities.

I hope this helps. Thanks Jeff Grell


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