All symbols inside the SiC structures have a certain which means: The number 3 in 3C-SiC refers back to the a few-bilayer periodicity in the stacking (ABC) as well as letter C denotes the cubic symmetry in the crystal. 3C-SiC is the only real attainable cubic polytype. The wurtzite ABAB. https://rafaelsqokg.eveowiki.com/1594836/the_al_and_o_chemical_formula_diaries