Question

Hi guys, i get stuck with this question. Pls help. thanks so much. I know there are 4 atoms in FCC.

A gold particle was measured to be spherical in shape with a radius of 400 nm. Note that assuming the gold atoms are small spheres that form the gold particle by packing together in a Face-Centered Cubic (FCC) structure. Determine the volume of each gold atom. Note that here A = Angstrom.
bobpursley
I don't understand what is meant by a gold "particle". Why not a large nugget of radius 2cm? What does that have to do with packing and cell size?
yeah i also don't know that. as stated in the question, the gold atoms form the gold particle. Thanks

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