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 General | States | Energies | Oxidation & Electrons | Appearance & Characteristics | Reactions | Other Forms Radius | Conductivity | Abundance


Name: Sodium Symbol: Na
Group: Alkali Met. Atomic weight: 22.98977
Density @ 293 K: 0.971 g/cm3 Atomic volume: 23.7 cm3/mol
Group: Alkali Met. discovered: 1807


state (s, l, g): s
melting point: 371.01 K boiling point: 1154.6 K
Heat of fusion: 2.598 kJ/mol Heat of vaporization: 96.960 kJ/mol


1st ionization energy: 495.8 kJ/mole
electronegativity: 0.93 2nd ionization energy: 4562.4 kJ/mole
electron affinity: 52.868 kJ/mole 3rd ionization energy: 6912.2 kJ/mole
Specific heat: 1.23 J/gK heat atomization: 109 kJ/mole atoms

Oxidation & Electrons:

Shells: 2,8,1 electron configuration: [Ne] 3s1
minimum oxidation number: -1 maximum oxidation number: 1
min. common oxidation no.: 0 max. common oxidation no.: 1

Appearance & Characteristics:

structure: bcc: body-centered cubic color: silvery
uses: lamps, table salt toxicity:
hardness: 0.4 mohs characteristics: soft


reaction with air: vigorous, =>Na2O2
reaction with 6M HCl: vigorous, =>H2, NaCl reaction with 6M HCl: vigorous, =>H2, NaCl
reaction with 15M HNO3: vigorous, =>NaNO3, NOx reaction with 6M NaOH: vigorous, =>H2, NaOH

Other Forms:

number of isotopes: 1 hydride(s): NaH
oxide(s): Na2O chloride(s): NaCl


ionic radius (2- ion): pm ionic radius (1- ion): pm
atomic radius: 186 pm ionic radius (1+ ion): 116 pm
ionic radius (2+ ion): pm ionic radius (3+ ion): pm


thermal conductivity: 142 J/m-sec-deg
electrical conductivity: 209.6 1/mohm-cm polarizability: 23.6 A^3


source: Halite (misc)
rel. abund. solar system: 4.759 log abundance earth's crust: 4.4 log
cost, pure: 7 $/100g cost, bulk: $/100g