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|
Nitrogen
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| N | 7 | 14.0067 | -210.00 °C | -195.79 °C | Gas | 1.251 g/L | Non-Metal |
|
|
|
| General |
| Name, symbol, number |
nitrogen, N, 7 |
| Chemical series |
nonmetals |
| Group, period, block |
15, 2, p |
| Appearance |
colorless gas
 |
| Standard atomic weight |
14.0067(2) g·mol−1 |
| Electron configuration |
1s2 2s2 2p3 |
| Electrons per shell |
2, 5 |
| Physical properties |
| Phase |
gas |
| Density |
(0 °C, 101.325 kPa)
1.251 g/L |
| Melting point |
63.15 K
(-210.00 °C, -346.00 °F) |
| Boiling point |
77.36 K
(-195.79 °C, -320.42 °F) |
| Critical point |
126.21 K, 3.39 MPa |
| Heat of fusion |
(N2) 0.720 kJ·mol−1 |
| Heat of vaporization |
(N2) 5.57 kJ·mol−1 |
| Heat capacity |
(25 °C) (N2)
29.124 J·mol−1·K−1 |
|
|
| Atomic properties |
| Crystal structure |
hexagonal |
| Oxidation states |
±3, 5, 4, 2
(strongly acidic oxide) |
| Electronegativity |
3.04 (Pauling scale) |
Ionization energies
(more) |
1st: 1402.3 kJ·mol−1 |
| 2nd: 2856 kJ·mol−1 |
| 3rd: 4578.1 kJ·mol−1 |
| Atomic radius |
65 pm |
| Atomic radius (calc.) |
56 pm |
| Covalent radius |
75 pm |
| Van der Waals radius |
155 pm |
| Miscellaneous |
| Magnetic ordering |
diamagnetic |
| Thermal conductivity |
(300 K) 25.83 m W·m−1·K−1 |
| Speed of sound |
(gas, 27 °C) 353 m/s |
| CAS registry number |
7727-37-9 |
| Selected isotopes |
|
|
| References |
|
Nitrogen Compounds
Nitroglycerin
|
Source: Wikipedia article Nitrogen
|
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Chemistry Quick Facts
