MTL 200 certification ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
Ceramics - Compounds of metallic and non-metallic elements with complex structures.
Bonding - Ranges from ionic to covalent. Anions are larger than cations.
Crystal structure stability factors - Charge neutrality
Cation-to-anion size ratio (r < 1)
Coordination number (4, 6, 8 typical)
AX - Type: - Rock Salt (NaCl)
Cesium Chloride (CsCl)
Zinc Blende (ZnS)
Rock Salt (NaCl) - CN=6, FCC, 2(r_c + r_a) = a.
Cesium Chloride (CsCl) - CN=8, cube-centered cation, 4(r_c + r_a) = √3a.
Zinc Blende (ZnS) - CN=4, FCC, tetrahedral, 2√2(r_c + r_a) = a.
AmXp-Type (CaF2) - Similar to CsCl with CN=4.
AmBnXp-Type (BaTiO3) - Cubic structure containing two cations.
Close Packing - Tetrahedral (CN=4), Octahedral (CN=6)
Silicate Ceramics: - Silica (SiO2)
Silica Glasses
Silicates
Silica (SiO2) - Includes quartz, cristobalite, tridymite.
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
Ceramics - Compounds of metallic and non-metallic elements with complex structures.
Bonding - Ranges from ionic to covalent. Anions are larger than cations.
Crystal structure stability factors - Charge neutrality
Cation-to-anion size ratio (r < 1)
Coordination number (4, 6, 8 typical)
AX - Type: - Rock Salt (NaCl)
Cesium Chloride (CsCl)
Zinc Blende (ZnS)
Rock Salt (NaCl) - CN=6, FCC, 2(r_c + r_a) = a.
Cesium Chloride (CsCl) - CN=8, cube-centered cation, 4(r_c + r_a) = √3a.
Zinc Blende (ZnS) - CN=4, FCC, tetrahedral, 2√2(r_c + r_a) = a.
AmXp-Type (CaF2) - Similar to CsCl with CN=4.
AmBnXp-Type (BaTiO3) - Cubic structure containing two cations.
Close Packing - Tetrahedral (CN=4), Octahedral (CN=6)
Silicate Ceramics: - Silica (SiO2)
Silica Glasses
Silicates
Silica (SiO2) - Includes quartz, cristobalite, tridymite.
