If 2 axes are of equal length and the third is either shorter or longer than other two, and all angles are 90˚ then this is a:
Correct answer: B. Tetragonal system
- A. Cubic system
- B. Tetragonal system
- C. Triclinic system
- D. Hexagonal system
Explanation
In the tetragonal system, two axes are of equal lengths and the third axe is either shorter or larger than the other two. All angles are 90°.
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Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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