InterviewSolution
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InterviewSolution
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Assertion (A) : Graphite is an example of tetragonal crystal system. Reason (R ) : For a tetragonal system, `a = b != c` and `alpha = beta = 90^(@), gamma = 120^(@)`.A. If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`B. If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`C. If `(A)` is correct, but `(R)` is incorrect.D. If both `(A)` and `(R)` are incorrect. |
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Answer» Correct Answer - D Correct (A): Graphite is an example of hexagonal crystal system in which each `C-`atom is `sp^(2)` hybridized and is linked to three other `C-`atom in a hexagonal planar structure. Correct (R): For tetragonal system, `a = b ne c` and `alpha = beta = gamma = 90^(@)`. For hexagonal systems, `a = b ne c` and `alpha = beta = 90^(@), gamma = 120^(@)`. |
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