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fluorine (F, 2P3/2 in ground state) | ||||
subject | fact |
fluorine | has symbol F | |
has lethal intake 5 - 25 g NaF | ||
has lethal intake 52 mg kg-1 NaF ingestion for rat | ||
has lethal intake 185 p.p.m. for 1 hour F2 inhalation for rat | ||
has lethal intake 5 - 25 g NaF | ||
has reserves 123 × 106 tonnes | ||
has main mining area Canada, USA, UK, Russia, Mexico, Italy | ||
has mineral apatite, cryolite, fluorite | ||
has neutron scattering length 0.5654 × 10-12 cm | ||
has electron affinity 328 kJ mol-1 from F to F- | ||
has toxic intake 250 mg NaF | ||
has van der Waals radii 135 pm | ||
has covalent radii 58 pm | ||
has thermal neutron capture cross section 0.0096 barns | ||
has longest lived isotope fluorine 19 | ||
has isotope mass range 17 to 23 | ||
has number of isotopes 7 including nuclear isomers | ||
has pronunciation floor-een | ||
has name origin fluere = to flow from Latin | ||
has discovery location Paris, France | ||
has abundance 3.63 × 104 in Sun relative to H = 1 × 1012 | ||
has abundance 950 p.p.m. in Earth's crust | ||
has abundance 1.0 × 10-4 p.p.m. in Atlantic surface seawater | ||
has abundance 0.96 × 10-4 p.p.m. in deep Atlantic seawater | ||
has abundance 1.0 × 10-4 p.p.m. in Pacific surface seawater | ||
has abundance 0.4 × 10-4 p.p.m. in deep Pacific seawater | ||
has specimen not available for sale as pure gas because it is too reactive and dangerous | ||
has world production 2400 tonnes year-1 for gas (F2) | ||
has world production 4.7 × 106 tonnes year-1 for fluorite (CaF2) | ||
has chief source fluorite | ||
has mass absorption coefficient 16.4 cm2 g-1 for CuKalpha X-ray diffraction | ||
has mass absorption coefficient 1.80 cm2 g-1 for MoKalpha X-ray diffraction | ||
has space group C2/m for α-F2 | ||
has space group Pm3n for β-F2 | ||
has crystal cell dimension a = 550, b = 328, c = 728 pm, β = 102.17 deg for α-F2 | ||
has crystal cell dimension a = 667 pm for β-F2 | ||
has crystal type monoclinic for α-F2 | ||
has crystal type cubic for β-F2 | ||
has atomic emission line 685.603 nm for F I (strong) | ||
has atomic emission line 690.248 nm for F I | ||
has atomic emission line 703.747 nm for F I | ||
has atomic emission line 712.789 nm for F I | ||
has term symbol 2P3/2 in ground state | ||
has electron configuration [He]2s22p5 in ground state | ||
has mass of element in person 2.6 g for a 70 kg average person | ||
has daily dietary intake 0.3 - 0.5 mg | ||
has level in humans 0.5 mg dm-3 in blood | ||
has level in humans 2000 - 12000 p.p.m. in bone | ||
has level in humans 0.22 - 7 p.p.m. in liver | ||
has level in humans 0.05 p.p.m. in muscle | ||
has hazard gas is highly corrosive and toxic, low concentration exposure can cause eye and lung irritation | ||
has hazard metal florides are very toxic | ||
has hazard organic fluorides are often quite harmless | ||
has biological role essential in trace quantities for mammals, including humans, in the form of fluoride (F-) | ||
has thermal conductivity 0.0248 W m-1 K-1 at 273 K | ||
has thermal conductivity 0.0279 W m-1 K-1 at 300 K | ||
has molar volume 18.05 cm3 | ||
has heat capacity 31.30 J K-1 mol-1 for molecular gas (F2) at constant pressure 0.1 MPa at 298.15 K | ||
has heat capacity 22.744 J K-1 mol-1 for atomic gas at constant pressure 0.1 MPa at 298.15 K | ||
has heat of vaporization 6.548 kJ mol-1 | ||
has heat of fusion 5.10 kJ mol-1 | ||
has boiling point 85.01 K | ||
has melting point 53.53 K | ||
has electronegativity 3.98 Pauling | ||
has relative atomic mass 18.9984032 in units of 12C = 12.000 | ||
has ionic radii 133 pm for F- | ||
has atomic radii 70.9 pm | ||
has number of protons 9 | ||
has registry number 7782-41-4 for Chemical Abstracts System database | ||
has density 1516 kg m-3 for liquid at 85.01 K boiling point | ||
has density 1.696 kg m-3 for gas at 273 K | ||
has synthesis mechanism electrolysis of molten KF·2HF | ||
has ocean oxidation state -I | ||
has ocean residence time 400000 years | ||
has atomic number 9 | ||
reacts with almost everything violently | ||
has discovery date 1886 (isolated) | ||
has discoverer H. Moissan | ||
has uses fabrication of UF6, SF6 and fluorinating agents such as ClF3 | ||
has uses polymers, pesticides and antibiotics | ||
has uses CaF2 as a flux in metallurgy | ||
has uses AlF3 in aluminium production | ||
has image | ||
has definition pale yellow gas (F2) which is the most reactive of all the elements, and is the strongest oxidizing agent | ||
is a kind of halogen | ||
is a kind of gaseous element | ||
is a kind of accumulating oceanic element | ||
has critical pressure 5573 kPa | ||
has critical temperature 144.3 K | ||
accumulating oceanic element | has ocean concentration depth indenpendent | |
gaseous element | has state gas at standard temperature and pressure | |
halogen | has group 17 | |
has synonym group VII element | ||
oceanic element | has occurrence ocean | |
element | is a part of Universe | |
particle | obeys uncertainty principle | |
has frequency inversely proportional to the wavelength | ||
has wavelength inversely proportional to its momentum | ||
has charge | ||
has mass | ||
physical object | has location or center of gravity | |
has angular momentum | ||
has velocity | ||
has momentum | ||
has temperature | ||
has volume | ||
has extent | ||
has material |
Kinds of fluorine :
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