Acompound of formula has the hcp lattice Which atom forms the hcp lattice and what fraction of tetra hedral voids is occupied by the other atoms:
hcp lattice -B , tetrahedral voids
hcp lattice -A , tetrahedral voids -B
hcp lattice -B , Tetrahedral voids -A
hcp lattice - A , Tetrahedral voids -B
Tetrahedral Voids -
Voids form by touching 4 spheres , 3 in the same plane and one in lower or upper plane is known as tetrahedral void.
- wherein
r = radius of void
R = radius of atom
Voids -
Voids are empty spaces in a unit cell. They are of four types: triangular, tetrahedral, octahedral, cubic.
-
hcp lattice -B , tetrahedral voids
Option 2)
hcp lattice -A , tetrahedral voids -B
Option 3)hcp lattice -B , Tetrahedral voids -A
Option 4)hcp lattice - A , Tetrahedral voids -B
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