2. Atomic Structure
Atomic Packing — Quiz
Test your understanding of atomic packing with 5 practice questions.
Practice Questions
Question 1
Which polyhedron describes the arrangement of nearest neighbours around an atom in a face-centred cubic structure?
Question 2
An atom in a hexagonal close-packed crystal has how many nearest neighbours?
Question 3
What geometric shape describes the arrangement of host atoms around a tetrahedral interstitial site in an FCC lattice?
Question 4
Given aluminum crystallizes in an FCC lattice with lattice parameter $a=0.408\,\mathrm{nm}$ and atomic weight $M=26.98\,\mathrm{g/mol}$, calculate its theoretical density $\rho$ in g/cm^3 (use $N_A=6.022\times10^{23}\,\mathrm{mol}^{-1}$).
Question 5
An atom occupying an octahedral interstitial site in an HCP lattice has what coordination number?