Copper and Tantalum has atomic radius of 0.1278 nm and 0.1430 nm, respectively. They both form a cubic structure with a side length of 3.597Å and 330.13 pm, respectively. Please state if Copper and Tantalum are BCC or FCC based on the numbers above. Show your work.How many unit cells of copper are there in 1 cm3?
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