Q.

The interracial angles of a hexagonal crystal system are given by                      

A. α = β = ϒ = 90o
B. α = β = 90o ϒ = 120o
C. α = β = ϒ ≠ 90o
D. α ≠ β ≠ ϒ ≠ 90o
Answer» B. α = β = 90o ϒ = 120o
Explanation: the crystal system is a system by which crystal structures are classified.
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