At 5:41 and 8:16, "Sodium Chloride belongs to the crystal lattice system" & "Calcite belongs to the rhombohedral crystal system".It would be more appropriate to say that they crystallised as crystal lattices or rhombohedral crystals. There are no systems as such that are named thus to which these compounds belong.
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Outline:* Download CIF (Crystallographic Information File) from Crystallography Open Database (COD). * Open CIF files in Jmol. * Display unit cell and unit cell parameters on Jmol panel. * Display crystal structures of different crystal systems. For example Cubic (sodium chloride), Hexagonal (graphite) and Rhombohedral (calcite).
* Download CIF (Crystallographic Information File) from Crystallography Open Database (COD). * Open CIF files in Jmol. * Display unit cell and unit cell parameters on Jmol panel. * Display crystal structures of different crystal systems. For example Cubic (sodium chloride), Hexagonal (graphite) and Rhombohedral (calcite).
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