2021 Summer First Mini-Test

1. What is the cell formula of the Al2O3 structure from Materials Studio structures collection ? (How many Al and O atoms ?) In the primitive cell of the sma e crystal, how many Al and O atoms are there ?

2. Use both isosurface and slice visyualization method, to show Si-Si covalent bonds of an 8-atom Si conventional crystal.

3. Build C₂H₄ and C₂H₂ and put them into adequate supercell respectively.

4. Build 3D structure model of C24 based on the provided diagram below

5. Build a co-centric Si-Ge nano-sphere of snm in diameter containing a 1nm diameter Ge core.