boron 12 | has symbol 12B | |
has nuclear magnetic moment μ = +1.0031 nuclear magnetons with diamagnetic correction | |
has nuclear spin I = 1+ h/2π | |
has decay mode β- (13.369 Mev) | |
has decay mode β-α 1.6% | |
has decay mode γ | |
has half life 0.0202 seconds | |
has number of nucleons 12 | |
has number of neutrons 7 | |
has atomic mass 12.014352 | |
is an instance of boron | |
boron | has lethal intake 10 - 20 g as boric acid | |
has reserves 270 × 106 tonnes as B2O3 | |
has main mining area ulexite in USA, Tibet, Chile; colemanite in USA, Turkey | |
has mineral borax, colemanite, datolite, kernite, ulexite | |
has neutron scattering length 0.535 × 10-12 cm | |
has electron affinity 26.7 kJ mol-1 from B to B- | |
has toxic intake 5 g as boric acid | |
has mass magnetic susceptibility -7.8 × 10-9 kg-1 m3 for solid | |
has electrical resistivity 18000 Ω m at 293 K | |
has van der Waals radii 208 pm | |
has covalent radii 88 pm | |
has thermal neutron capture cross section 767 barns | |
has longest lived isotope boron 11 | |
has isotope mass range 8 to 13 | |
has number of isotopes 6 including nuclear isomers | |
has pronunciation bohr-on | |
has name origin buraq from Arabic | |
has discovery location Paris, France and London, England | |
has abundance 2.63 × 105 in Sun relative to H = 1 × 1012 | |
has abundance 950 p.p.m. in Earth's crust | |
has abundance 4.41 p.p.m. in seawater | |
has specimen crystals, pieces or powder. Safe. | |
has world production 1 × 106 tonnes year-1 as B2O3 | |
has chief source kernite, borax, ulexite, colemanite | |
has mass absorption coefficient 2.39 cm2 g-1 for CuKalpha X-ray diffraction | |
has mass absorption coefficient 0.392 cm2 g-1 for MoKalpha X-ray diffraction | |
has space group R3m for α-B | |
has crystal cell dimension a = 506.7, α = 58deg4' pm for α-B | |
has crystal type rhombohedral for α-B | |
has atomic emission line 208.891 nm for B I | |
has atomic emission line 208.957 nm for B I | |
has atomic emission line 249.667 nm for B I | |
has atomic emission line 249.773 nm for B I (strong) | |
has atomic emission line 345.129 nm for B I | |
has atomic emission line 1166.004 nm for B I | |
has atomic emission line 1166.247 nm for B I | |
has term symbol 2P1/2 in ground state | |
has electron configuration [He]2s22p1 in ground state | |
has mass of element in person 18 mg for a 70 kg average person | |
has daily dietary intake 1 - 3 mg | |
has level in humans 0.13 mg dm-3 in blood | |
has level in humans 1.1 - 3.3 p.p.m. in bone | |
has level in humans 0.4 - 3.3 p.p.m. in liver | |
has level in humans 0.33 - 1 p.p.m. in muscle | |
has hazard boric acid and borates are poisonous, although once used in medicines | |
has biological role essential to plants; toxic in excess | |
has linear expansion coefficient 5 × 10-6 K-1 | |
has thermal conductivity 27.0 W m-1 K-1 at 300 K | |
has molar volume 4.62 cm3 | |
has heat capacity 11.09 J K-1 mol-1 for α solid at constant pressure 0.1 MPa at 298.15 K | |
has heat capacity 20.799 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | |
has heat of vaporization 538.9 kJ mol-1 | |
has heat of fusion 22.2 kJ mol-1 | |
has boiling point 3931 K | |
has melting point 2573 K | |
has electronegativity 2.04 Pauling | |
has relative atomic mass 10.811 in units of 12C = 12.000 | |
has ionic radii 23 pm for B3+ | |
has atomic radii 83 pm | |
has number of protons 5 | |
has registry number 7440-42-8 for Chemical Abstracts System database | |
has density 2340 kg m-3 for β-rhombohedral solid at 293 K | |
has synthesis mechanism | |
has ocean oxidation state III | |
has ocean residence time 1 × 107 years | |
has atomic number 5 | |
reacts with metals to form borides | |
has discovery date 1808 | |
has discoverer L.J. Lussac and L.J. Thenard | |
has uses borosilicate glass, detergents and fire-retardants | |
has image | |
accumulating oceanic element | has ocean concentration depth indenpendent | |
group III element | has group 13 | |
element | is a part of Universe | |
has synonym atom | |
oceanic element | has occurrence ocean | |
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 | |