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physical object > natural object > particle > element > column grouped element > group IV element > silicon |
silicon (Si, 3P0 in ground state) | ||||
subject | fact |
silicon | has symbol Si | |
has lethal intake non-toxic | ||
has reserves unlimited × 10 tonnes | ||
has main mining area talc in Austria, Italy, India, South Africa, Australia, mica in Canada, USA, India, Brazil | ||
has mineral silicates | ||
has neutron scattering length 0.41543 × 10-12 cm | ||
has electron affinity 133.3 kJ mol-1 from Si to Si- | ||
has toxic intake non-toxic | ||
has poisson's ratio 0.42 GPa | ||
has rigidity modulus 39.7 GPa | ||
has young's modulus 113 GPa | ||
has mass magnetic susceptibility -1.8 × 10-9 kg-1 m3 for solid | ||
has electrical resistivity 0.001 Ω m at 273 K | ||
has van der Waals radii 200 pm | ||
has covalent radii 117 pm | ||
has thermal neutron capture cross section 0.171 barns | ||
has longest lived isotope silicon 28 | ||
has isotope mass range 24 to 34 | ||
has number of isotopes 11 including nuclear isomers | ||
has pronunciation sil-i-kon | ||
has name origin silicis = flint from Latin | ||
has discovery location Stockholm, Sweden | ||
has abundance 4.47 × 107 in Sun relative to H = 1 × 1012 | ||
has abundance 277100 p.p.m. in Earth's crust | ||
has abundance 0.03 p.p.m. in Atlantic surface seawater | ||
has abundance 0.82 p.p.m. in deep Atlantic seawater | ||
has abundance 0.03 p.p.m. in Pacific surface seawater | ||
has abundance 4.09 p.p.m. in deep Pacific seawater | ||
has specimen available as powder, pieces or lumps. Safe. | ||
has world production 5000 tonnes year-1 for electronic grade (very pure) | ||
has world production 480000 tonnes year-1 for metallurgical grade | ||
has world production 3.4 × 106 tonnes year-1 for metallurgical grade | ||
has chief source quartz, talc, mica | ||
has mass absorption coefficient 60.6 cm2 g-1 for CuKα X-ray diffraction | ||
has mass absorption coefficient 6.44 cm2 g-1 for MoKα X-ray diffraction | ||
has space group | ||
has crystal cell dimension a = pm | ||
has crystal type | ||
has atomic emission line 251.611 nm for Si I | ||
has atomic emission line 288.156 nm for Si I | ||
has atomic emission line 504.103 nm for Si II | ||
has atomic emission line 505.598 nm for Si I | ||
has atomic emission line 566.956 nm for Si I | ||
has atomic emission line 634.710 nm for Si II | ||
has atomic emission line 637.136 nm for Si II | ||
has term symbol 3P0 in ground state | ||
has electron configuration [Ne]3s23p2 in ground state | ||
has mass of element in person 1 g for a 70 kg average person | ||
has daily dietary intake 18 - 1200 mg | ||
has level in humans 3.9 mg dm-3 in blood | ||
has level in humans 17 p.p.m. in bone | ||
has level in humans 12 - 120 p.p.m. in liver | ||
has level in humans 100 - 200 p.p.m. in muscle | ||
has hazard some silicate fibres are carcinogenic such as asbestos | ||
has biological role essential to some species and possibly to humans | ||
has linear expansion coefficient 4.2 × 10-6 K-1 | ||
has thermal conductivity 148 W m-1 K-1 at 300 K | ||
has molar volume 12.06 cm3 | ||
has heat capacity 20.00 J K-1 mol-1 for solid at constant pressure 0.1 MPa at 298.15 K | ||
has heat capacity 22.251 J K-1 mol-1 for gas at constant pressure 0.1 MPa at 298.15 K | ||
has heat of vaporization 383.3 kJ mol-1 | ||
has heat of fusion 39.6 kJ mol-1 | ||
has boiling point 2628 K | ||
has melting point 1683 K | ||
has electronegativity 1.90 Pauling | ||
has relative atomic mass 28.0555 in units of 12C = 12.000 | ||
has ionic radii 26 pm for Si4+ | ||
has ionic radii 271 pm for Si4- | ||
has atomic radii 117 pm | ||
has number of protons 14 | ||
has registry number 7440-21-3 for Chemical Abstracts System database | ||
has density 2329 kg m-3 for solid at 293 K | ||
has density 2525 kg m-3 for liquid at 1683 K melting point | ||
has synthesis mechanism reduction of sand (SiO2) with carbon produces black amorphous silicon | ||
has ocean oxidation state IV | ||
has ocean residence time 30000 years | ||
has atomic number 14 | ||
does not react oxygen, water or acids | ||
reacts HF acid or hot alkali solutions by dissolving | ||
has discovery date 1824 | ||
has discoverer J.J. Berzelius | ||
has uses semiconductors, alloys and polymers | ||
has image | ||
has definition ultrapure crystals of silicon have a blue-grey metallic sheen | ||
is a kind of nonmetallic metalloid | ||
is a kind of group IV element | ||
is a kind of lithophile element | ||
is a kind of recycled oceanic element | ||
recycled oceanic element | has ocean concentration increasing with depth | |
lithophile element | has occurrence in silicate materials such as igneous rocks | |
group IV element | has group 14 | |
element | is a part of Universe | |
has synonym atom | ||
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 silicon :
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