MTL 200 certification (Crystal Structures and
Atomic Coordination) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
FCC - Face-Centered Cubic structure with 4 atoms.
BCC - Body-Centered Cubic structure with 2 atoms.
HCP - Hexagonal Close-Packed structure with 6 atoms.
Simple Cubic - Structure with 1 atom.
APF - Atomic Packing Factor
Lattice parameter - a=2R√2 for FCC, a=4R/√3 for BCC, a,b=2R√ER for HCP.
FCC APF - 0.74
FCC Lattice Parameter - a= 2R x root(2)
FCC elements - Cu, Al, Ag,
BCC APF - 0.68
BCC Lattice Parameter - a = 4R/root(3)
BCC elements - Cr, Fe,
HCP APF - 0.74
HCP lattice parameter - A=2r , V=24root(2)R^3
HCP elements - Cd, Zn, Mg
Coordination #s - FCC:12 BCC:8 HCP:12 SIMPLE CUBIC:6
Atomic Coordination) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
FCC - Face-Centered Cubic structure with 4 atoms.
BCC - Body-Centered Cubic structure with 2 atoms.
HCP - Hexagonal Close-Packed structure with 6 atoms.
Simple Cubic - Structure with 1 atom.
APF - Atomic Packing Factor
Lattice parameter - a=2R√2 for FCC, a=4R/√3 for BCC, a,b=2R√ER for HCP.
FCC APF - 0.74
FCC Lattice Parameter - a= 2R x root(2)
FCC elements - Cu, Al, Ag,
BCC APF - 0.68
BCC Lattice Parameter - a = 4R/root(3)
BCC elements - Cr, Fe,
HCP APF - 0.74
HCP lattice parameter - A=2r , V=24root(2)R^3
HCP elements - Cd, Zn, Mg
Coordination #s - FCC:12 BCC:8 HCP:12 SIMPLE CUBIC:6
