The radius of silicon atom is — Solid State Chemistry Question

💡 Solution & Explanation

In SiC, Z = 4 SiC units per cell. Density of SiC = 3.2 g/cm3. We calculate edge length a_SiC = 4.36 A. Since r_Si + r_C = a_SiC * sqrt(3) / 4 = 4.36 * 1.732 / 4 = 1.89 A. Substituting r_C = 0.77 A gives r_Si = 1.89 - 0.77 = 1.12 A.