Ang sodio (Iningles sodium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Na ug kaiphan nga atomik 11. Ang sodio mao ang puthaw.
Quick facts Sodium, Panagway ...
| Sodium |
|---|
11Na |
|
|
| Panagway |
silvery white metallic
Spectral lines of sodium |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
sodium, Na, 11 |
| Paglitok |
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all-dee-əm]] |
| Kategoriyang elemento |
puthaw |
| Group, period, block |
1, 3, s |
| Gibug-aton sa atomo |
22.98976928(2) |
| Kontorno sa elektron |
[Ne] 3s1
2,8,1
 Electron shells of sodium (2,8,1) |
| History |
| Pagkadiskobre |
Humphry Davy (1807) |
| First isolation |
Humphry Davy (1807) |
| Physical properties |
| Phase |
magahi |
| Density (near r.t.) |
0.968 g·cm−3 |
| Liquid density at m.p. |
0.927 g·cm−3 |
| Melting point |
370.87 K, 97.72 °C, 207.9 °F |
| Boiling point |
1156 K, 883 °C, 1621 °F |
| Critical point |
(extrapolated)
2573 K, 35 MPa |
| Heat of fusion |
2.60 kJ·mol−1 |
| Heat of vaporization |
97.42 kJ·mol−1 |
| Molar heat capacity |
28.230 J·mol−1·K−1 |
| Vapor pressure |
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
554 |
617 |
697 |
802 |
946 |
1153 |
|
| Atomic properties |
| Oxidation states |
+1, -1
(strongly basic oxide) |
| Electronegativity |
0.93 (Pauling scale) |
Ionization energies
(more) |
1st: 495.8 kJ·mol−1 |
| 2nd: 4562 kJ·mol−1 |
| 3rd: 6910.3 kJ·mol−1 |
| Atomic radius |
186 pm |
| Covalent radius |
166±9 pm |
| Van der Waals radius |
227 pm |
| Miscellanea |
| Crystal structure |
body-centered cubic
|
| Magnetic ordering |
paramagnetic |
| Electrical resistivity |
(20 °C) 47.7 nΩ·m |
| Thermal conductivity |
142 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 71 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 3200 m·s−1 |
| Young's modulus |
10 GPa |
| Shear modulus |
3.3 GPa |
| Bulk modulus |
6.3 GPa |
| Mohs hardness |
0.5 |
| Brinell hardness |
0.69 MPa |
| CAS registry number |
7440-23-5 |
| Most stable isotopes |
| Main article: Isotopes of sodium |
| iso |
NA |
half-life |
DM |
DE (MeV) |
DP
Plantilya:Infobox element/isotopes decay3 (2 2 1) |
|---|
| 23Na |
100% |
23Na is stable with 12 neutrons |
|
| · r |
Close
