| SYMBOL | F |
|
| ATOMIC NUMBER | 9 |
| ATOMIC WEIGHT | 18.998 |
| GROUP NUMBER | 17 |
| STANDARD STATE | GAS |
| COLOUR | LIGHT YELLOW |
| DISCOVERED | IN 1886 BY HENRI MOLSSAN IN FRANCE |
| ORIGIN OF NAME | FROM THE LATIN FLUERE MEANING TO FLOW |
| USES |
- HIGH TEMPERATURE PLASTICS.
- HYDROFLUORIC ACID IS USED TO ETCH GLASS USED FOR LIGHT BULBS.
- CFCS ARE USED AS REFRIGERANTS AND IN AIR CONDITIONING SYSTEMS.
- FLUORIDES ADDED TO DRINKING WATER.
|
| ATOMIC RADIUS | 0.709 * 10-10M |
| COMPOUNDS |
- F(-I) F-(aq), HF, KHF2, CaF2 ETC.
- F(O) F2.
|
| EFFECTIVE NUCLEAR CHARGE (Slater) | 5.20 |
| DENSITY | 158.75 KgM-3(SOLID), 1516 KgM-3 (LIQUID AT 85K), 1.696 KgM-3(GAS AT 273K) |
| MELTING POINT | 53.53 K |
| BOILING POINT | 85.01 K |
| ENTHALPY OF FUSION | 5.1 KJMol-1 |
| ENTHALPY OF VAPOURISATION | 6.548 KJMol-1 |
| ISOTOPES | F-17 (Radioactive), F-18 (Radioactive), F-19 AND F-20 (Radioactive) |
| ELECTRON CONFIGURATION | 1S22S22P5 |
| FIRST IONISATION ENERGY | 1681 KJMol-1 |
| ELECTRON AFFINITY | 328 KJMol-1 |
| SOURCES | FLUORITE IS MINED IN CANADA, U.S.A., U.K., RUSSIA, MEXICO AND ITALY. |
| GENERAL INFORMATION | FLUORINE IS A VERY ELECTRONEGATIVE AND REACTIVE ELEMENT, ONE OF THE FEW TO FOR COMPOUNDS WITH THE NOBLE GASES. |
FLUORINE