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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Banibrata majumder
In pedial class of triclinic crystal system, there is only a single crystal face.
but why the answer is 4.. as in answer key..
symmetry operation, that is 1 fold rotation. I hope the answer is wrong anyhow.. I am attaching here some notes from Tulane University as reference, link: https://www2.tulane.edu/~sanelson/eens211/32crystalclass.htm