MTL 200 certification (Types of Crystal Structures
and Their Properties) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
Single crystal - periodic arrangement of atoms - no grain boundaries!!!!
Polycrystalline - several crystals having different crystal orientations.
Grain boundary - atomic mismatch
Non-crystalline - amorphous, no system arrangement of atoms (liquid).
Anisotropy - directionality in properties!!!
Isotropy - no directionality in properties.
FCC Closest packet plane/direction - (1,1,1)/[1,1,0]
BCC closest packed plane/direction - (1,1,0)/[1,1,1]
HCP closest packed plane/direction - (0001)/[11,-2,0]
simple cubic close-packed plane/direction - (100),[100]
HCP Closest Packed Plane and Stacking Pattern - (0001) and ABABAB...
FCC Closest Packed Plane and Stacking Pattern - (111) and ABCABCABC...
Planar density equation - # atoms centered on plane / area of plane
Linear densities equations - # of atoms centerd on direction vector/ length of direction
vector
and Their Properties) ASSESSMENT GUIDE
2025|MOST COMMON QUESTIONS WITH
CORRECTLY VERIFIED ANSWERS (the latest
ones)|ALREADY A+ GRADED|GUARANTEED
PASS/wishing you success in your studies
Single crystal - periodic arrangement of atoms - no grain boundaries!!!!
Polycrystalline - several crystals having different crystal orientations.
Grain boundary - atomic mismatch
Non-crystalline - amorphous, no system arrangement of atoms (liquid).
Anisotropy - directionality in properties!!!
Isotropy - no directionality in properties.
FCC Closest packet plane/direction - (1,1,1)/[1,1,0]
BCC closest packed plane/direction - (1,1,0)/[1,1,1]
HCP closest packed plane/direction - (0001)/[11,-2,0]
simple cubic close-packed plane/direction - (100),[100]
HCP Closest Packed Plane and Stacking Pattern - (0001) and ABABAB...
FCC Closest Packed Plane and Stacking Pattern - (111) and ABCABCABC...
Planar density equation - # atoms centered on plane / area of plane
Linear densities equations - # of atoms centerd on direction vector/ length of direction
vector
