 |
| General |
| Name | Sodium |
| Symbol | Na |
| Number | 11 |
| Group Number | 1 |
| Group | Alkali metals |
| Block | s |
| Density | 0.971 g/cm3 |
| Atomic Weight | 22.98977 g/mol |
| Atomic Volume | 23.7 cm3/mol |
| Discover | 1807 |
|
| States |
| State | Solid |
| Melting Point | 370.87 K |
| Boiling Point | 1156 K |
| Triple Point | Nil |
| Critical Point | 2573 K |
| Heat of Fusion | 2.60 kJ/mol |
| Heat of Vaporization | 97.42 kJ/mol |
|
| Energies |
| First Ionization Energy | 495.8 kJ/mole |
| Second Ionization Energy | 4562.4 kJ/mole |
| Third Ionization Energy | 6912.2 kJ/mole |
| Electronegativity | 0.93 |
| Electron Affinity | 52.868 kJ/mole |
| Specific Heat | 1.23 J/gK |
| Heat Atomization | 109 kJ/mole atoms |
|
| Oxidation and Electrons |
| Shells | 2,8,1 |
| Electron Configuration | [Ne] 3s1 |
| Minimum Oxidation Number | -1 |
| Maximum Oxidation Number | 1 |
| Minimum Common Oxidation Number | 0 |
| Maximum Common Oxidation Number | 1 |
|
| Appearance and Characteristics |
| Crystal Structure | cubic body centered |
| Characteristics | soft |
| Color | silvery |
| Uses | lamps, table salt |
| Hardness | 0.4 mohs |
| Toxicity | None |
|
| Reactions |
| Reaction with Air | vigorous, =>Na2O2 |
| 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 | NaH |
| Oxide | Na2O |
| Chloride | NaCl |
|
| Radius |
| Atomic Radius | 186 pm |
| Ionic Radius (1+ ion) | 116 pm |
| Ionic Radius (1- ion) | Nil |
| Ionic Radius (2+ ion) | Nil |
| Ionic Radius (2- ion) | Nil |
| Ionic Radius (3+ ion) | Nil |
|
| Conductivity |
| Thermal Conductivity | 142 J/m-sec-deg |
| Electrical Conductivity | 209.6 1/mohm-cm |
| Polarizability | 23.6 A3 |
|
| Abundance |
| Source | Halite (misc) |
| Relation Abundance Solar System | 4.759 log |
| Abundance Earth's Crust | 4.4 log |
|
