fluorine 17 | has symbol 17F | |
has nuclear magnetic moment μ = +4.722 nuclear magnetons with diamagnetic correction | |
has nuclear spin I = 5/2+ h/2π | |
has decay mode β+ (2.761 Mev) | |
has decay mode no γ | |
has half life 64.5 seconds | |
has number of nucleons 17 | |
has number of neutrons 8 | |
has atomic mass 17.002095 | |
is an instance of fluorine | |
fluorine | 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 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 | |