โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Sodium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้ˆ‰
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Natrium
  • ๐Ÿ‡ซ๐Ÿ‡ท Sodium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Natrium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ื ืชืจืŸ
  • ๐Ÿ‡ฎ๐Ÿ‡น Sodio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใƒŠใƒˆใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Sódio
  • ๐Ÿ‡ท๐Ÿ‡บ ะะฐั‚ั€ะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Sodio
  • ๐Ÿ‡ธ๐Ÿ‡ช Natrium

Sodium: crystal structures

  • Space group: Im-3m
  • Space group number: 229
  • Structure: bcc (body-centred cubic)
  • Cell parameters:
    • a: 429.06 pm
    • b: 429.06 pm
    • c: 429.06 pm
    • α: 90.000°
    • β: 90.000°
    • γ: 90.000°

You may view the structure of sodium:

Sodium crystal structure image (ball and stick style)
Sodium crystal structure image (ball and stick style).
Sodium crystal structure image (space filling style)
Sodium crystal structure image (space filling style).
Sodium crystal structure image displayed using JSMol. Try rotating the picture. The JSMol logo at the bottom right of the image is a popup menu allowing furher tinteraction with the structure
The body-centred cubic (bcc) structure is the most stable form for sodium metal at 298 K (25°C). Under normal conditions, all of the Group 1 (alakali metals) elements are based upon the bcc structure. The closest Na-Na separation is 372 pm implying a sodium metallic radius of 186 pm. This means that lithium is smaller than potassium. In the bcc lattice, every sodium atom is surrounded by eight other nearest neightbour sodium atoms organised into a cubic array. One way to visualize the bcc lattice is as two interlocked infinite cubic arrays of atoms.

References

E. Aruja and H. Perlitz, Z. Kristallogr. Kristallgeom. Kristallphys. Kristallchem., 1939, 100, 195.