| SYMBOL | N |
|
| ATOMIC NUMBER | 7 |
| ATOMIC WEIGHT | 14.007 |
| GROUP NUMBER | 15 |
| STANDARD STATE | GAS |
| COLOUR | COLOURLESS |
| DISCOVERED | 1772 DANIEL RUTHERFORD, SCOTLAND |
| ORIGIN OF NAME | FROM THE LATIN NITRUM AND THE GREEK NITRON GENES MEANING NITRE FORMING |
| USES |
- TO MAKE AMMONIA (THE HABER PROCESS) WHICH IS THEN USED IN FERTILIZERS AND NITRIC ACID FORMATION.
- AS AN ATMOSTPHERE TO PRODUCE ELECTRONIC COMPONENTS IN.
- AS A REFRIGERANT FOR FOOD PRODUCTS.
- IN THE OIL INDUSTRY, TO BUILD UP PRESSURE IN WELLS TO FORCE OIL TO THE SURFACE.
|
| ATOMIC RADIUS | 0.71 * 10-10M |
| COMPOUNDS |
- N(-III) NH3, NH4+(aq)
- N(-II) N2H4, N2H5+(aq)
- N(-I) NH2OH
- N(O) N2
- N(II)NO
- N(III)HNO2, NO2+(aq), NF3
- N(IV)N2O4, NO2
|
| EFFECTIVE NUCLEAR CHARGE (Slater) | 3.90 |
| DENSITY | 1026 KgM-3(SOLID AT 21K), 880 KgM-3 (LIQUID AT B.P.), 1.2506 KgM-3(GAS AT 273K) |
| MELTING POINT | 63.29 K |
| BOILING POINT | 77.4 K |
| ENTHALPY OF FUSION | 0.720 KJMol-1 |
| ENTHALPY OF VAPOURISATION | 5.577 KJMol-1 |
| ISOTOPES | N-13 (Radioactive), N-14, N-15, N-16 (Radioactive), N-17 |
| ELECTRON CONFIGURATION | 1S22S22P3 |
| FIRST IONISATION ENERGY | 1402.3 KJMol-1 |
| ELECTRON AFFINITY | -7 KJMol-1 |
| SOURCES | THE ATMOSTPHERE |
| GENERAL INFORMATION | NITROGEN MAKES UP 78% BY VOLUME OF THE ATMOSTPHERE AND IS PRODUCED BY THE LIQUIFACTION AND LIQUID DISTILLATION OF AIR. |
NITROGEN