Na - Sodium

Sodium (aka natrium) is a ubiquitous, alkali metal. Humphrey Davy electrolysed pure sodium from sodium hydroxide in 1807 in London. 

Atomic number - 11 Density g/mL 0 .97
Atomic weight u 22 .98977 Melting point K 371
Bonding radius A 1 .54 Boiling point K 1156
Atomic radius A 2 .23 Heat of vaporization kJ/mol 96 .96
Ionization Potential V 5 .139 Heat of fusion kJ/mol 2 .598
Electronegativity - 0 .93 Specific heat J/gK 1 .23
The oxide is a strong base.
Crystal are body centered cubic.

Electron config. : [Ne] 3s1


Isotopes of Na: Click mass number for decay process, product for element page.


020
447.9 msec
EC,13.887 MeV
Ne-20
20.007348
021
22.49 sec
EC,3.547 MeV
Ne-21
20.997655
022
2.6019 yr
EC,2.842 MeV
Ne-22
21.994436
023 100%

Stable

22.989769
024
14.9590 hr
B-,5.516 MeV
Mg-24
23.990963
024a
20.20 msec
B-,5.988 MeV
Mg-24
23.991470
025
59.1 sec
B-,3.835 MeV
Mg-25
24.989954
026
1.072 sec
B-,9.312 MeV
Mg-26
25.992589
027
301 msec
B-/B-n,9.010
Mg-27/Mg-26
26.994009
028
30.5 msec
B-/B-n,13.990
Mg-28/Mg-27
27.998894
029
44.9 msec
B-/B-n,13.280
Mg-29/Mg-28
29.002812
030
48 msec
B-/B-2n/B-a/B-n,17.480
Mg-30/Mg-28/Ne-26/Mg-29
30.009221
031
17.0 msec
B-/B-2n/B-n,15.880
Mg-31/Mg-29/Mg-30
31.013591
032
13.2 msec
B-/B-2n/B-n,19.100
Mg-32/Mg-30/Mg-31
32.019645
033
8.2 msec
B-/B-2n/B-n,20.300
Mg-33/Mg-31/Mg-32
33.027375
034
5.5 msec
B-/B-2n/B-n,24.100
Mg-34/Mg-32/Mg-33
34.034890
035
1.5 msec
B-/B-n,24.900
Mg-35/Mg-34
35.044230
MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass