Question:
Which of the following crystal system has four types of unit cells?
Which of the following crystal system has four types of unit cells?
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Count the Bravais lattices belonging to each crystal system; orthorhombic has four.
Updated On: Nov 12, 2026
- Cubic
- Orthorhombic
- Tetragonal
- Monoclinic
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
The 14 Bravais lattices are distributed among 7 crystal systems.
Step 2: Count for each option
Cubic has 3 (primitive, body-centred, face-centred). Tetragonal has 2 (primitive, body-centred). Monoclinic has 2 (primitive, end-centred).
Step 3: Orthorhombic
Orthorhombic has 4: primitive, body-centred, face-centred and end-centred.
Final Answer:
The orthorhombic system has four types of unit cells. \[ \boxed{\text{(B) }\text{Orthorhombic}} \]
The 14 Bravais lattices are distributed among 7 crystal systems.
Step 2: Count for each option
Cubic has 3 (primitive, body-centred, face-centred). Tetragonal has 2 (primitive, body-centred). Monoclinic has 2 (primitive, end-centred).
Step 3: Orthorhombic
Orthorhombic has 4: primitive, body-centred, face-centred and end-centred.
Final Answer:
The orthorhombic system has four types of unit cells. \[ \boxed{\text{(B) }\text{Orthorhombic}} \]
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