Chemicool
Na
11
22.98977
Sodium
General
|
States
|
Energies
|
Oxidation & Electrons
|
Appearance & Characteristics
Reactions
|
Other Forms
|
Radius
|
Conductivity
|
Abundance
Encyclopedia Britannica articles
General
Name
Sodium
Symbol
Na
atomic number
11
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
Back to the top
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
Back to the top
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
Back to the top
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
Back to the top
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
Back to the top
World Wide Web presentation of Chemicool Periodic Table is © Copyright 1996-99 by David D. Hsu. Some data were provided by and used with the permission of JCE Software and is owned and copyright by the Division of Chemical Education, Inc. Additional data were provided by Perkin-Elmer through Peter Lykos of IIT. The information may not be redistributed without the permission of
David Hsu
or
JCE Software
.