Shivam sharma Asked an Mcq
September 4, 2020 9:49 ampts 30 pts
The crystal class which is NOT a planar point group i8 (A) 3m (B) 4 mm (C) 3 D) 6/m
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  • Rahul pandey Best Answer
    Corrected; the statement of question is confusing. If you will think about the point group without planar symmetry then answer will be 3 (which I thought earlier); but if you will ...
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  • Sajan sarthak sahoo thankyou
    Planar mean it should present in 2d plane. For 6/m we need 3d space. 6/m =6 fold rotation+ perpendicular to plane c axis
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  • Rahul pandey
    Ans (D) 6/m Point group 6/m is not a planar point group because mirror plane will create a reflection of each faces lying in one plane.
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  • Shivam sharma
    2 Faculties have different answers
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  • Shivam sharma
    please dont confuse the aspirants
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