1. The methane model is based on symmetry properties of the methane. 2. The following table lists the various symmetry properties of the Platonic solids. 3. The symmetry properties of Wigner 3-j symbols are much simpler. 4. The symmetry properties of the crystal are described by the concept of space groups. 5. The last symmetry property says that the torsion tensor 6. The labels t 2g and e g refer to irreducible representations, which describe the symmetry properties of these orbitals. 7. This and other lattice symmetry properties result in piezoelectricity of the hexagonal and zincblende ZnO, and pyroelectricity of hexagonal ZnO. 8. The basis for these rules lies in the symmetry properties of the molecules and especially in the disposition of their electrons. 9. This is often advantageous because the symmetry properties of 6-" j " symbols are easier to remember. 10. As the dipole moment is something like charge times length p z has the same symmetry properties as z, which is totally symmetric.
