Electronic data		Thermal data		Steric data
Shells: 2,8,1 Orbitals: [Ne] 3s1 Electronegativity: 1.0, 0.9 1. Ionization potential: 5.1391 eV 2. Ionization potential: 47.286 eV 3. Ionization potential: 71.641 eV Oxidation states: 1 Electrical conductivity: 0.210 10^6		Melting point: 97.81 °C Boiling point: 882.9 °C Specific heat: 1.23 J/gK Heat of fusion: 2.598 kJ/mol Heat of vaporization: 96.960 kJ/mol Thermal conductivity: 1.41 W/cmK		Atomic radius: 2.23 Å Ionic radius: 1.02 Å () Covalent radius: 1.54 Å Atomic volume: 23.7 cm³/mol Density (293 K): 0.971 g/cm³ Crystal structure: Cubic: Body centered

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Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
22Na	0	21.9944	3	2.605y	+,EC	View
23Na	100	22.9898	3/2	--	stable	--
24Na	0	23.9909	4	14.96h	-	View

Legend

Name origin:	Medieval Latin: sodanum, (headache remedy); symbol from Latin natrium, (sodium carbonate)
Description:	Soft silvery-white metal. Sixth most abundant element in the earth's crust. Burns in air with a brilliant yellow flame.
Discovered by:	Sir Humphrey Davy
Year:	1807
Place:	England
Sources:	Obtained by electrolysis of melted sodium chloride (salt), borax and cryolite.
Use(s):	There are few uses for the pure metal, however its compounds are used in medicine, agriculture and photography. Sodium chloride (NaCl) is table salt. Liquid sodium is sometimes used to cool nuclear reactors.