AM_Sodium Formula: Na Name: Sodium Unit cell: 3.767 3.767 6.154 90.0 90.0 120.0 , V=75.63 Space group: P63/MMC (194)

Barrett C S , Acta Crystallographica , 9 (1956) p.671-677, X-ray study of the alkali metals at low temperatures, Locality: synthetic, Sample: at T = 5 K, Note: lattice parameters are average of 4 values