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physical object > natural object > particle > element > column grouped element > group III element > boron > boron 8
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boron 8
(8B)
subjectfact 
boron 8has symbol 8B2001-09-27 09:29:21.0
has nuclear magnetic moment μ = 1.0355 nuclear magnetons with diamagnetic correctionhas source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:21.0
has nuclear spin I = 2+ h/2πhas source: Fuller, G.H. 1976, <i>Journal of Physical Chemistry Reference Data</i> <b>5</b> 835 'Nuclear Spins and Moments', 2001-09-27 09:29:21.0
has decay mode β+ (17.979 Mev)2001-09-27 09:29:21.0
has decay mode 2 α2001-09-27 09:29:21.0
has half life 0.770 seconds2001-09-27 09:29:21.0
has number of nucleons 82001-09-27 09:29:21.0
has number of neutrons 32001-09-27 09:29:20.0
has atomic mass 8.0246052001-09-27 09:29:20.0
is an instance of boronhas URL: http://nucleardata.nuclear.lu.se/nucleardata/toi/nuclide.asp?iZA=50008, 2001-09-27 09:29:20.0
boronhas lethal intake 10 - 20 g as boric acid2001-09-27 09:29:20.0
has reserves 270 × 106 tonnes as B2O32001-09-27 09:29:20.0
has main mining area ulexite in USA, Tibet, Chile; colemanite in USA, Turkey2001-09-27 09:29:20.0
has mineral borax, colemanite, datolite, kernite, ulexite2001-09-27 09:29:20.0
has neutron scattering length 0.535 × 10-12 cm2001-09-27 09:29:20.0
has electron affinity 26.7 kJ mol-1 from B to B-2001-09-27 09:29:20.0
has toxic intake 5 g as boric acid2001-09-27 09:29:20.0
has mass magnetic susceptibility -7.8 × 10-9 kg-1 m3 for solid2001-09-27 09:29:20.0
has electrical resistivity 18000 Ω m at 293 K2001-09-27 09:29:20.0
has van der Waals radii 208 pm2001-09-27 09:29:20.0
has covalent radii 88 pm2001-09-27 09:29:20.0
has thermal neutron capture cross section 767 barns2001-09-27 09:29:20.0
has longest lived isotope boron 112001-09-27 09:29:20.0
has isotope mass range 8 to 132001-09-27 09:29:20.0
has number of isotopes 6 including nuclear isomers2001-09-27 09:29:20.0
has pronunciation bohr-on2001-09-27 09:29:20.0
has name origin buraq from Arabic2001-09-27 09:29:20.0
has discovery location Paris, France and London, England2001-09-27 09:29:20.0
has abundance 2.63 × 105 in Sun relative to H = 1 × 10122001-09-27 09:29:20.0
has abundance 950 p.p.m. in Earth's crust2001-09-27 09:29:20.0
has abundance 4.41 p.p.m. in seawater2001-09-27 09:29:20.0
has specimen crystals, pieces or powder. Safe.2001-09-27 09:29:20.0
has world production 1 × 106 tonnes year-1 as B2O32001-09-27 09:29:20.0
has chief source kernite, borax, ulexite, colemanite2001-09-27 09:29:20.0
has mass absorption coefficient 2.39 cm2 g-1 for CuKalpha X-ray diffraction2001-09-27 09:29:20.0
has mass absorption coefficient 0.392 cm2 g-1 for MoKalpha X-ray diffraction2001-09-27 09:29:20.0
has space group R3m for α-B2001-09-27 09:29:20.0
has crystal cell dimension a = 506.7, α = 58deg4' pm for α-B2001-09-27 09:29:20.0
has crystal type rhombohedral for α-B2001-09-27 09:29:20.0
has atomic emission line 208.891 nm for B I2001-09-27 09:29:20.0
has atomic emission line 208.957 nm for B I2001-09-27 09:29:20.0
has atomic emission line 249.667 nm for B I2001-09-27 09:29:20.0
has atomic emission line 249.773 nm for B I (strong)2001-09-27 09:29:20.0
has atomic emission line 345.129 nm for B I2001-09-27 09:29:20.0
has atomic emission line 1166.004 nm for B I2001-09-27 09:29:20.0
has atomic emission line 1166.247 nm for B I2001-09-27 09:29:20.0
has term symbol 2P1/2 in ground state2001-09-27 09:29:20.0
has electron configuration [He]2s22p1 in ground state2001-09-27 09:29:20.0
has mass of element in person 18 mg for a 70 kg average person2001-09-27 09:29:20.0
has daily dietary intake 1 - 3 mg2001-09-27 09:29:20.0
has level in humans 0.13 mg dm-3 in blood2001-09-27 09:29:20.0
has level in humans 1.1 - 3.3 p.p.m. in bone2001-09-27 09:29:20.0
has level in humans 0.4 - 3.3 p.p.m. in liver2001-09-27 09:29:20.0
has level in humans 0.33 - 1 p.p.m. in muscle2001-09-27 09:29:20.0
has hazard boric acid and borates are poisonous, although once used in medicines2001-09-27 09:29:20.0
has biological role essential to plants; toxic in excess2001-09-27 09:29:20.0
has linear expansion coefficient 5 × 10-6 K-12001-09-27 09:29:20.0
has thermal conductivity 27.0 W m-1 K-1 at 300 K2001-09-27 09:29:20.0
has molar volume 4.62 cm32001-09-27 09:29:20.0
has heat capacity 11.09 J K-1 mol-1 for α solid at constant pressure 0.1 MPa at 298.15 K2001-09-27 09:29:20.0
has heat capacity 20.799 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K2001-09-27 09:29:20.0
has heat of vaporization 538.9 kJ mol-12001-09-27 09:29:20.0
has heat of fusion 22.2 kJ mol-12001-09-27 09:29:20.0
has boiling point 3931 K2001-09-27 09:29:20.0
has melting point 2573 K2001-09-27 09:29:20.0
has electronegativity 2.04 Pauling2001-09-27 09:29:20.0
has relative atomic mass 10.811 in units of 12C = 12.0002001-09-27 09:29:20.0
has ionic radii 23 pm for B3+2001-09-27 09:29:20.0
has atomic radii 83 pm2001-09-27 09:29:20.0
has number of protons 52001-09-27 09:29:20.0
has registry number 7440-42-8 for Chemical Abstracts System databasehas URL: http://info.cas.org, 2001-09-27 09:29:20.0
has density 2340 kg m-3 for β-rhombohedral solid at 293 K2001-09-27 09:29:20.0
has synthesis mechanism2001-09-27 09:29:20.0
has ocean oxidation state III2001-09-27 09:28:28.0
has ocean residence time 1 × 107 years2001-09-27 09:28:28.0
has atomic number 52001-09-27 09:29:20.0
reacts with metals to form borides2001-09-27 09:29:20.0
has discovery date 18082001-09-27 09:29:20.0
has discoverer L.J. Lussac and L.J. Thenard2001-09-27 09:29:20.0
has uses borosilicate glass, detergents and fire-retardants2001-09-27 09:29:20.0
has image 2001-09-27 09:28:32.0
accumulating oceanic elementhas ocean concentration depth indenpendent2001-09-27 09:28:28.0
group III elementhas group 132001-09-27 09:28:24.0
elementis a part of Universe2001-09-27 09:32:17.0
has synonym atom2001-09-27 09:28:19.0
oceanic elementhas occurrence ocean2001-09-27 09:28:26.0
particleobeys uncertainty principle2001-09-27 09:28:02.0
has frequency inversely proportional to the wavelength2001-09-27 09:28:02.0
has wavelength inversely proportional to its momentum2001-09-27 09:28:02.0
has charge2001-09-27 09:28:01.0
has mass2001-09-27 09:28:02.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has velocity2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0
has material2001-09-27 09:27:27.0

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