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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dinesh khalmaniya 1
Tetrahedron: - symmetry elements: 4 C3 axes, 3 C2 axes, 3 S4 axes, 6 mirror planes - 24 symmetry operations: E, 8C3, 3C2, 6S4, 6σd; group