A cubic nanoparticle of copper is composed of approximately 1.25 × 105 atoms packed tightly in a simple cubic structure.
Taking the typical diameter of a copper atom to be 1 × 10-10 m, what is the estimated side length of this cubic nanoparticle?
5×10−11 m5 \times 10^{-11}\text{ m}5×10−11 m
5×10−9 m5 \times 10^{-9}\text{ m}5×10−9 m
3.5×10−8 m3.5 \times 10^{-8}\text{ m}3.5×10−8 m
1.25×10−5 m1.25 \times 10^{-5}\text{ m}1.25×10−5 m