Langasite is a line solid used in photo optic applications.American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia)and follows applicable ASTM testing standards.Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.
Lanthanum is a Block F, Group 3, Period 6 element. The number of electrons in each of Lanthanum's shells is 2, 8, 18, 18, 9, 2 and its electronic configuration is [Xe] 5d1 6s2. In its elemental form lanthanum 's CAS number is 7439-91-0. The lanthanum atom has a radius of 187.pm and it's Van der Waals radius is 200.pm. Lanthanum and compounds of Lanthanum are somewhat toxic. Lanthanum is one of the products manufactured and distributed under the tradename AE Rare Earths. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths. After cerium, it is the second most abundant of the rare earths. Lanthanum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.Lanthanum-rich lanthanide compositions have been used extensively for cracking reactions in FCC catalysts, especially to manufacture low-octane fuel for heavy crude oil. The name Lanthanum originates from the Greek word Lanthaneia which means 'To lie hidden'. See Lanthanum research below.
Gallium is a Block P, Group 13, Period 4 element. The number of electrons in each of Gallium's shells is 2, 8, 18, 3 and its electronic configuration is [Ar] 3d10 4s2 4p1. In its elemental form gallium's CAS number is 7440-55-3. The gallium atom has a radius of 122.1.pm and it's Van der Waals radius is 187.pm. Gallium is not toxic. Gallium is one of three elements that naturally occur as a liquid at room temperature. The other two are mercury and cesium. The application of gallium that has received the most attention is the production of semiconducting compounds. Of these, the most important are the compounds of gallium with antimony, arsenic or phosphor. Nowadays gallium arsenide (Ga-As) is undoubtedly the most used. This compound is used in the production of several electronic parts such as diodes and transistors, made for voltage rectification, signal amplification, etc. Other gallium arsenide applications are the semiconductor "lasing" and microwave generation and also in sensors to measure temperature, light or magnetic field. Gallium was first discovered by Hans Christian Oersted in 1825. See Gallium research below.
Silicon is a Block P, Group 14, Period 3 element. The number of electrons in each of Silicon's shells is 2, 8, 4 and its electronic configuration is [Ne] 3s2 3p2. In its elemental form silicon's CAS number is 7440-21-3. The silicon atom has a radius of 117.6.pm and it's Van der Waals radius is 210.pm. Silicon is not toxic but can cause chronic respiratory problems if inhaled as a fine silica or silicate dust. Asbestos silicates are carcinogenic. Silicon is one of man's most useful elements. It makes up 25.7% of the earth's crust, by weight, and is the second most abundant element, being exceeded only by oxygen. The Czochralski process is commonly used to produce single crystals of silicon used for solid-state or semiconductor devices. Silica, as sand, is a principal ingredient of glass, one of the most inexpensive of materials with excellent mechanical, optical, thermal, and electrical properties. Silicon is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Ultra high purity silicon can be doped with boron, gallium, phosphorus , or arsenic to produce silicon for use in transistors, solar cells, rectifiers, and other solid-state devices which are used extensively in the electronics and space-age industries. Hydrogenated amorphous silicon has shown promise in producing economical cells for converting solar energy into electricity. Silcones are important products of silicon. They range from liquids to hard, glasslike solids with many useful properties. Silicon was first discovered by Jons Berzelius in 1823. The name Silicon originates from the Latin word "silex" which means flint or hard stone. See Silicon research below.
American Elements semi conducting materials are structures produced from ultra high purity starting materials synthesized by our high purity production facility which includes several large electric muffle furnaces, a tube furnace for hydrogen reduction, 50 gallon glass-lined Pfaudler reactors supported by our analytical laboratory containing X-ray diffraction, SEM, AA, BET surface area, and ICP Spectrometry for trace metals analysis. See a discussion of American Elements Ultra High Purity and Analytical capabilities. See Growth for processes used to fabricate semiconductor materials, which include:
"pulling" by the Czochaiski method for production of semiconductor materials
Flux growth and gradient freeze
Directional solidification of fluorites using both the Bridgman-Stockbarger and float zoning techniques
Intestinal pseudo-obstruction secondary to persistent constipation due to lanthanum carbonate.
Camarero-Temiño V, Mercado-Valdivia V, Hijazi-Prieto B, Abaigar-Luquin P.
Nefrologia. 2012 Jan 27;32(1):129. doi: 10.3265/Nefrologia.pre2011.Nov.11191. English, Spanish. No abstract available.
PMID:
22294019
[PubMed - as supplied by publisher]
Chlorination of Lanthanum Oxide.
Gaviría JP, Navarro LG, Bohé AE.
J Phys Chem A. 2012 Jan 25. [Epub ahead of print]
PMID:
22280490
[PubMed - as supplied by publisher]
Dipyridyl ?-diketonate complexes and their use as metalloligands in the formation of mixed-metal coordination networks.
Burrows AD, Mahon MF, Renouf CL, Richardson C, Warren AJ, Warren JE.
Dalton Trans. 2012 Jan 26. [Epub ahead of print]
PMID:
22278306
[PubMed - as supplied by publisher]
Multifunctional lanthanum tetraphosphonates: Flexible, ultramicroporous and proton-conducting hybrid frameworks.
Colodrero RM, Olivera-Pastor P, Losilla ER, Aranda MA, Leon-Reina L, Papadaki M, McKinlay AC, Morris RE, Demadis KD, Cabeza A.
Dalton Trans. 2012 Jan 25. [Epub ahead of print]
PMID:
22278089
[PubMed - as supplied by publisher]
Biosorption and desorption of lanthanum(III) and neodymium(III) in fixed-bed columns with Sargassum sp.: Perspectives for separation of rare earth metals.
Oliveira RC, Guibal E, Garcia O.
Biotechnol Prog. 2012 Jan 24. doi: 10.1002/btpr.1525. [Epub ahead of print]
PMID:
22275117
[PubMed - as supplied by publisher]
Mid-infrared spectral broadening in an ultrafast laser inscribed gallium lanthanum sulphide waveguide.
McCarthy JE, Bookey HT, Psaila ND, Thomson RR, Kar AK.
Opt Express. 2012 Jan 16;20(2):1545-51. doi: 10.1364/OE.20.001545.
PMID:
22274497
[PubMed - in process]
Redetermination of LaZn(5) based on single crystal X-ray diffraction data.
Oshchapovsky I, Zelinska O, Rozdzynska-Kielbik B, Pavlyuk V.
Acta Crystallogr Sect E Struct Rep Online. 2012 Jan 1;68(Pt 1):i1. Epub 2011 Dec 3.
PMID:
22259311
[PubMed - in process]
Novel LaBO(3) hollow nanospheres of size 34±2nm templated by polymeric micelles.
Sasidharan M, Gunawardhana N, Luitel HN, Yokoi T, Inoue M, Yusa SI, Watari T, Yoshio M, Tatsumi T, Nakashima K.
J Colloid Interface Sci. 2011 Dec 28. [Epub ahead of print]
PMID:
22257959
[PubMed - as supplied by publisher]
Lanthanum Carbonate Reduces Urine Phosphorus Excretion: Evidence of High-Capacity Phosphate Binding.
Pennick M, Poole L, Dennis K, Smyth M.
Ren Fail. 2012 Jan 17. [Epub ahead of print]
PMID:
22250993
[PubMed - as supplied by publisher]
Effect of Lanthanum on Rooting of In Vitro Regenerated Shoots of Saussurea involucrata Kar. et Kir.
Guo B, Xu LL, Guan ZJ, Wei YH.
Biol Trace Elem Res. 2012 Jan 13. [Epub ahead of print]
PMID:
22246792
[PubMed - as supplied by publisher]
Fabrication, Characterization, and Application of a Composite Adsorbent for Simultaneous Removal of Arsenic and Fluoride.
Jing C, Cui J, Huang Y, Li A.
ACS Appl Mater Interfaces. 2012 Jan 25. [Epub ahead of print]
PMID:
22235839
[PubMed - as supplied by publisher]
Gas-phase lanthanide chloride clusters: relationships among ESI abundances and DFT structures and energetics.
Rutkowski PX, Michelini MC, Gibson JK.
Phys Chem Chem Phys. 2012 Feb 14;14(6):1965-77. Epub 2012 Jan 6.
PMID:
22227857
[PubMed - in process]
Enhanced electrochemical properties of fluoride-coated LiCoO2 thin films.
Lee HJ, Kim SB, Park YJ.
Nanoscale Res Lett. 2012 Jan 5;7(1):16. [Epub ahead of print]
PMID:
22221488
[PubMed - as supplied by publisher]
La(5)Zn(2)Sn.
Oshchapovsky I, Pavlyuk V, Dmytriv G, Chumak I, Ehrenberg H.
Acta Crystallogr Sect E Struct Rep Online. 2011 Nov 1;67(Pt 11):i65. Epub 2011 Oct 22.
PMID:
22219730
[PubMed - in process]
Lanthanum chloride bidirectionally influences calcification in bovine vascular muscle smooth cells.
Zhao WH, Gou BD, Zhang TL, Wang K.
J Cell Biochem. 2011 Dec 28. doi: 10.1002/jcb.24049. [Epub ahead of print]
PMID:
22213182
[PubMed - as supplied by publisher]
The Intramolecular Rearrangement of Phosphinohydrazides [R'(2)P-NR-NR-M] ? [RN?PR'(2)-NR-M]: General Rules and Exceptions. Transformations of Bulky Phosphinohydrazines (R-NH-N(PPh(2))(2), R = tBu, Ph(2)P).
Kornev AN, Sushev VV, Panova YS, Belina NV, Lukoyanova OV, Fukin GK, Ketkov SY, Abakumov GA, Lönnecke P, Hey-Hawkins E.
Inorg Chem. 2012 Jan 16;51(2):874-81. Epub 2011 Dec 30.
PMID:
22208524
[PubMed - in process]
Medicare Part D: challenges for dialysis patients. Part 1.
Smith S, Witten B, Paykin C, Weiner S, Chianchiano D, St Peter WL.
Nephrol News Issues. 2011 Nov;25(12):38-40, 42, 44-5.
PMID:
22204167
[PubMed - indexed for MEDLINE]
Nanocrystalline Brookite with Enhanced Stability and Photocatalytic Activity: Influence of Lanthanum(III) Doping.
Perego C, Wang YH, Durupthy O, Cassaignon S, Revel R, Jolivet JP.
ACS Appl Mater Interfaces. 2012 Jan 17. [Epub ahead of print]
PMID:
22201282
[PubMed - as supplied by publisher]
The light-sensitive conductance of melanopsin-expressing Joseph and Hesse cells in amphioxus.
Pulido C, Malagón G, Ferrer C, Chen JK, Angueyra JM, Nasi E, Gomez Mdel P.
J Gen Physiol. 2012 Jan;139(1):19-30.
PMID:
22200946
[PubMed - in process]
Preparation and characterization of La(III) encapsulated silica gel/chitosan composite and its metal uptake studies.
Gandhi MR, Meenakshi S.
J Hazard Mater. 2012 Feb 15;203-204:29-37. Epub 2011 Nov 28.
PMID:
22197561
[PubMed - in process]
Effects of alumina refinery wastewater and signature metal constituents at the upper thermal tolerance of: 2. The early life stages of the coral Acropora tenuis.
Negri AP, Harford AJ, Parry DL, van Dam RA.
Mar Pollut Bull. 2011 Feb 22. [Epub ahead of print]
PMID:
21349553
[PubMed - as supplied by publisher]
The role of gallium-67 scintigraphy in comparing inflammatory activity between tuberculous and nontuberculous mycobacterial pulmonary diseases.
Yeh JJ, Huang YC, Teng WB, Huang YF, Chuang YW, Hsu CC.
Nucl Med Commun. 2011 Feb 19. [Epub ahead of print]
PMID:
21346662
[PubMed - as supplied by publisher]
Light-curing of dental resins with GaN violet laser diode: The effect of photoinitiator on mechanical strength.
Kameyama A, Hatayama H, Kato J, Haruyama A, Teraoka H, Takase Y, Yoshinari M, Tsunoda M.
Lasers Med Sci. 2011 Feb 23. [Epub ahead of print]
PMID:
21344248
[PubMed - as supplied by publisher]
Swift and heavy ion implanted chalcogenide laser glass waveguides and their different refractive index distributions.
Qiu F, Narusawa T, Zheng J.
Appl Opt. 2011 Feb 10;50(5):733-7. doi: 10.1364/AO.50.000733.
PMID:
21343996
[PubMed - in process]
Multimodal wide-field two-photon excitation imaging: characterization of the technique for in vivo applications.
Hwang JY, Wachsmann-Hogiu S, Ramanujan VK, Nowatzyk AG, Koronyo Y, Medina-Kauwe LK, Gross Z, Gray HB, Farkas DL.
Biomed Opt Express. 2011 Jan 13;2(2):356-64.
PMID:
21339880
[PubMed - in process]
Closed Loop Coherent Control of Electronic Transitions in Gallium Arsenide.
Singha S, Hu Z, Gordon RJ.
J Phys Chem A. 2011 Feb 22. [Epub ahead of print]
PMID:
21338157
[PubMed - as supplied by publisher]
Neutral Carbene Analogues of Group 13 Elements: The Dimerization Reaction to a Biradicaloid.
Schoeller WW.
Inorg Chem. 2011 Feb 21. [Epub ahead of print]
PMID:
21338099
[PubMed - as supplied by publisher]
Caustic imaging of gallium droplets using mirror electron microscopy.
Kennedy SM, Zheng CX, Tang WX, Paganin DM, Jesson DE.
Ultramicroscopy. 2011 Jan 19;111(5):356-363. [Epub ahead of print]
PMID:
21334287
[PubMed - as supplied by publisher]
Odd-Even Effects in Charge Transport across Self-Assembled Monolayers.
Thuo MM, Reus WF, Nijhuis CA, Barber JR, Kim C, Schulz MD, Whitesides GM.
J Am Chem Soc. 2011 Feb 16. [Epub ahead of print]
PMID:
21323319
[PubMed - as supplied by publisher]
Ga(III) complexes-The effect of metal coordination on potential systemic absorption after topical exposure.
Staff K, Brown MB, Chilcott RP, Hider RC, Jones SA.
Toxicol Lett. 2011 Feb 16. [Epub ahead of print]
PMID:
21315140
[PubMed - as supplied by publisher]
PUTATIVE CSF PROTEIN BIOMARKER CANDIDATES FOR AMNESTIC MILD COGNITIVE IMPAIRMENT.
Counts SE, Mufson EJ.
Transl Neurosci. 2010 Mar 1;1(1):2-8.
PMID:
21311725
[PubMed]
Effects of alumina refinery wastewater and signature metal constituents at the upper thermal tolerance of: 1. The tropical diatom Nitzschia closterium.
Harford AJ, Hogan AC, Tsang JJ, Parry DL, Negri AP, Adams MS, Stauber JL, van Dam RA.
Mar Pollut Bull. 2011 Feb 8. [Epub ahead of print]
PMID:
21310438
[PubMed - as supplied by publisher]
Preparation of a Versatile Bifunctional Zeolite for Targeted Imaging Applications.
Ndiege N, Raidoo R, Schultz MK, Larsen S.
Langmuir. 2011 Feb 9. [Epub ahead of print]
PMID:
21306141
[PubMed - as supplied by publisher]
Application of Low-Level Laser Irradiation (LLLI) and rhBMP-2 in Critical Bone Defect of Ovariectomized Rats: Histomorphometric Evaluation.
Siéssere S, Sousa LG, Issa JP, Iyomasa MM, Pitol DL, Barbosa AP, Semprini M, Sebald W, Bentley MV, Regalo SC.
Photomed Laser Surg. 2011 Feb 8. [Epub ahead of print]
PMID:
21303263
[PubMed - as supplied by publisher]
Simultaneous (68)Ga-DOTATOC-PET/MRI for IMRT Treatment Planning for Meningioma: First Experience.
Thorwarth D, Henke G, Müller AC, Reimold M, Beyer T, Boss A, Kolb A, Pichler B, Pfannenberg C.
Int J Radiat Oncol Biol Phys. 2011 Feb 5. [Epub ahead of print]
PMID:
21300465
[PubMed - as supplied by publisher]
Evaluation of antiviral activities of curcumin derivatives against HSV-1 in Vero cell line.
Zandi K, Ramedani E, Mohammadi K, Tajbakhsh S, Deilami I, Rastian Z, Fouladvand M, Yousefi F, Farshadpour F.
Nat Prod Commun. 2010 Dec;5(12):1935-8.
PMID:
21299124
[PubMed - in process]
Sarcoidosis Presenting as Transient Ischemic Attack Status.
González-Aramburu I, Ruiz-Pérez E, Gómez-Román J, Quirce R, Larrosa D, Pascual J.
J Stroke Cerebrovasc Dis. 2011 Feb 2. [Epub ahead of print]
PMID:
21295493
[PubMed - as supplied by publisher]
Gallium-67 SPECT/CT for Abdominal Abscess.
Cheng MF, Huang JY, Han DY, Hsu PY, Yen RF.
Clin Nucl Med. 2011 Mar;36(3):258-60.
PMID:
21285696
[PubMed - in process]
Low-level laser therapy: a useful technique for enhancing the proliferation of various cultured cells.
Alghamdi KM, Kumar A, Moussa NA.
Lasers Med Sci. 2011 Jan 28. [Epub ahead of print]
PMID:
21274733
[PubMed - as supplied by publisher]
Effects of low-level laser therapy on human osteoblastic cells grown on titanium.
Petri AD, Teixeira LN, Crippa GE, Beloti MM, de Oliveira PT, Rosa AL.
Braz Dent J. 2010;21(6):491-8.
PMID:
21271038
[PubMed - in process]
Desymmetrization of 7-dimethylphenylsilylcycloheptatriene. Towards the synthesis of new aminocycloheptitols.
Girard E, Desvergnes V, Tarnus C, Landais Y.
Org Biomol Chem. 2010 Oct 13. [Epub ahead of print]PMID: 20941452 [PubMed - as supplied by publisher]Related citations
Enzyme-functionalized polymer brush films on the inner wall of silicon-glass microreactors with tunable biocatalytic activity.
Costantini F, Benetti EM, Reinhoudt DN, Huskens J, Vancso GJ, Verboom W.
Lab Chip. 2010 Oct 13. [Epub ahead of print]PMID: 20941436 [PubMed - as supplied by publisher]Related citations
Wavelength-tunable excited-state absorption and optical limiting effects in the Q band region based on silicon phthalocyanine oligomers.
Ishii K, Sakai N.
Phys Chem Chem Phys. 2010 Oct 13. [Epub ahead of print]PMID: 20941425 [PubMed - as supplied by publisher]Related citations
Role of near-field enhancement in plasmonic laser nanoablation using gold nanorods on a silicon substrate.
Harrison RK, Ben-Yakar A.
Opt Express. 2010 Oct 11;18(21):22556-71. doi: 10.1364/OE.18.022556.PMID: 20941153 [PubMed - in process]Related citations
Ultrafast all-optical modulator with femtojoule absorbed switching energy in silicon-on-insulator.
Schönenberger S, Stöferle T, Moll N, Mahrt RF, Dahlem MS, Wahlbrink T, Bolten J, Mollenhauer T, Kurz H, Offrein BJ.
Opt Express. 2010 Oct 11;18(21):22485-96. doi: 10.1364/OE.18.022485.PMID: 20941147 [PubMed - in process]Related citations
The observation of super-long range surface plasmon polaritons modes and its application as sensory devices.
Zhang XL, Song JF, Lo GQ, Kwong DL.
Opt Express. 2010 Oct 11;18(21):22462-70. doi: 10.1364/OE.18.022462.PMID: 20941145 [PubMed - in process]Related citations
Silicon photonic temperature sensor?employing a ring resonator manufactured?using a standard CMOS process.
Kim GD, Lee HS, Park CH, Lee SS, Lim BT, Bae HK, Lee WG.
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Highly efficient nonlinearity reduction in silicon-on-insulator waveguides using vertical slots.
Yue Y, Zhang L, Wang J, Beausoleil RG, Willner AE.
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Zatryb G, Podhorodecki A, Hao XJ, Misiewicz J, Shen YS, Green MA.
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Tien EK, Huang Y, Gao S, Song Q, Qian F, Kalyoncu SK, Boyraz O.
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Lanthanum is a Block F, Group 3, Period 6 element. The number of electrons in each of Lanthanum's shells is 2, 8, 18, 18, 9, 2 and its electronic configuration is [Xe] 5d1 6s2. In its elemental form lanthanum 's CAS number is 7439-91-0. The lanthanum atom has a radius of 187.pm and it's Van der Waals radius is 200.pm. Lanthanum and compounds of 
Lanthanum are somewhat toxic. Lanthanum is one of the products manufactured and distributed under the tradename AE Rare Earths
. Lanthanum is the first element in the rare earth or lanthanide series. It is the model for all the other trivalent rare earths. After cerium, it is the second most abundant of the rare earths. Lanthanum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.Lanthanum-rich lanthanide compositions have been used extensively for cracking reactions in FCC catalysts, especially to manufacture low-octane fuel for heavy crude oil. The name Lanthanum originates from the Greek word Lanthaneia which means 'To lie hidden'. See Lanthanum research below.
Gallium is a Block P, Group 13, Period 4 element. The number of electrons in each of Gallium's shells is 2, 8, 18, 3 and its electronic configuration is [Ar] 3d10 4s2 4p1. In its elemental form gallium's CAS number is 7440-55-3. The gallium atom has a radius of 122.1.pm and it's Van der Waals radius is 187.pm. Gallium is not toxic. Gallium is one of three elements that naturally occur as a liquid at room temperature. The other two are mercury and cesium. The application of gallium that has received the most attention is the production of semiconducting compounds. Of these, the 
most
important are the compounds of gallium with antimony, arsenic or phosphor. Nowadays gallium arsenide (Ga-As) is undoubtedly the most used. This compound is used in the production of several electronic parts such as diodes and transistors, made for voltage rectification, signal amplification, etc. Other gallium arsenide applications are the semiconductor "lasing" and microwave generation and also in sensors to measure temperature, light or magnetic field. Gallium was first discovered by Hans Christian Oersted in 1825. See Gallium research below. 
Silicon is a Block P, Group 14, Period 3 element. The number of electrons in each of Silicon's shells is 2, 8, 4 and its electronic configuration is [Ne] 3s2 3p2. In its elemental form silicon's CAS number is 7440-21-3. The silicon atom has a radius of 117.6.pm and it's Van der Waals radius is 210.pm. Silicon is not toxic but can cause chronic respiratory problems if inhaled as a fine silica or silicate dust. Asbestos silicates are carcinogenic. Silicon is
one of man's most useful elements. It makes up 25.7% of the earth's crust, by weight, and is the second most abundant element, being exceeded only by oxygen. The Czochralski process is commonly used to produce single crystals of silicon used for solid-state or semiconductor devices. Silica, as sand, is a principal ingredient of glass, one of the most inexpensive of materials with excellent mechanical, optical, thermal, and electrical properties. Silicon is available as metal and compounds with purities from 99% to 99.9999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Ultra high purity silicon can be doped with boron, gallium, phosphorus , or arsenic to produce silicon for use in 
transistors, solar cells, rectifiers, and other solid-state devices which are used extensively in the electronics and space-age industries. Hydrogenated amorphous silicon has shown promise in producing economical cells for converting solar energy into electricity. Silcones are important products of silicon. They range from liquids to hard, glasslike solids with many useful properties. Silicon was first discovered by Jons Berzelius in 1823. The name Silicon originates from the Latin word "silex" which means flint or hard stone. See Silicon research below. 
