General: |
|
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
|
|
States: |
|
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
|
|
Energies: |
|
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
|
|
Reactions: |
|
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
|
|
Radius: |
|
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
|
|
Conductivity: |
|
thermal conductivity: 142 J/m-sec-deg
|
|
electrical conductivity: 209.6 1/mohm-cm
|
polarizability: 23.6 A^3
|
|
Abundance: |
|
source: Halite (misc)
|
|
rel. abund. solar system: 4.759 log
|
abundance earth's crust: 4.4 log
|
|
cost, pure: 7 $/100g
|
cost, bulk: $/100g
|
|
