Question

The number of crystal systems and the number of Bravais lattices are, respectively,

• A. 14 and 7
• B. 7 and 32
• C. 32 and 14
• D. 7 and 14

Hint:

The 7 crystal systems and 14 Bravais lattices are fundamental to crystallography, classifying the symmetry and structure of crystalline solids.

Answer 1

The Correct Option is D

Step 1: Understanding crystal systems and Bravais lattices.
There are 7 crystal systems, and each crystal system is classified into 14 possible Bravais lattices. The 7 crystal systems are based on symmetry, and the Bravais lattices represent the distinct arrangements of points in three-dimensional space.

Step 2: Analyzing the options.
(A) 14 and 7: Incorrect — The number of systems and lattices are reversed.
(B) 7 and 32: Incorrect — This is not the correct pairing of numbers.
(C) 32 and 14: Incorrect — The correct numbers are in the reverse order.
(D) 7 and 14: Correct — This is the correct pairing of the 7 crystal systems and 14 Bravais lattices.

Step 3: Conclusion.
The correct answer is (D) 7 and 14 based on the correct classification of crystal systems and Bravais lattices.