For a crystal system a = b = c and = = 90°, is [DCE 2007]

JEE Main Chemistry question

Not in JEE Main or NEET syllabus

For a crystal system and , is [DCE 2007]

(A)Tetragonal
(B)Hexagonal
(C)RhombohedralCorrect
(D)Monoclinic

Answer: (C)

Solution

A lattice with all three edges equal () and all three interaxial angles equal to one another but not equal to () is, by definition, the rhombohedral (trigonal) crystal system. Tetragonal requires \ne$

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Question ID VK-141544