Àdàkọ:Infobox sílíkọ́nù

Sílíkọ́nù, ₁₄Si

Sílíkọ́nù
Pípè	/ˈsɪlᵻkən/ (SIL-ə-kən) /ˈsɪləkɒn/ (SIL-ə-kahn)
Ìhànsójú	crystalline, reflective with bluish-tinged faces
Ìwúwo átọ̀mù Ar, std(Si)	[28.084, 28.086] conventional: 28.085
Sílíkọ́nù ní orí tábìlì àyè
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson C ↑ Si ↓ Ge aluminium ← sílíkọ́nù → phosphorus
Nọ́mbà átọ̀mù (Z)	14
Ẹgbẹ́	group 14 (carbon group)
Àyè	àyè 3
Àdìpọ̀	Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì	Metalloid
Ìtò ẹ̀lẹ́ktrọ́nù	[Ne] 3s2 3p2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 4
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	1687 K ​(1414 °C, ​2577 °F)
Ígbà ìhó	3538 K ​(3265 °C, ​5909 °F)
Kíki (near r.t.)	2.3290 g/cm3
when liquid (at m.p.)	2.57 g/cm3
Heat of fusion	50.21 kJ/mol
Heat of	359 kJ/mol
Molar heat capacity	19.789 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1908 2102 2339 2636 3021 3537
Atomic properties
Oxidation states	−4, −3, −2, −1, 0, +1, +2, +3, +4 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.90
energies	(more)
Atomic radius	empirical: 111 pm
Covalent radius	111 pm
Van der Waals radius	210 pm
Color lines in a spectral range Spectral lines of sílíkọ́nù
Other properties
Natural occurrence	primordial
Crystal structure	​
Speed of sound thin rod	8433 m/s (at 20 °C)
Thermal expansion	2.6 µm/(m·K) (at 25 °C)
Thermal conductivity	149 W/(m·K)
Electrical resistivity	103 Ω·m (at 20 °C)
Magnetic ordering	diamagnetic
Young's modulus	130-188 GPa
Shear modulus	51-80 GPa
Bulk modulus	97.6 GPa
Poisson ratio	0.064 - 0.28
Mohs hardness	7
CAS Number	7440-21-3
History
Prediction	Antoine Lavoisier (1787)
Discovery	Jöns Jacob Berzelius (1824)
First isolation	Jöns Jacob Berzelius (1824)
Named by	Thomas Thomson (1831)
Main isotopes of sílíkọ́nù
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 28Si 92.23% 28Si is stable with 14 neutrons 29Si 4.67% 29Si is stable with 15 neutrons 30Si 3.1% 30Si is stable with 16 neutrons 32Si trace 153 y β− 13.020 32P

References

This reference list does not appear in the article.