A silicide is a compound that has silicon with more electropositive elements. Silicon (ˈsɪlɪkən or /ˈsɪlɪkɒn/ silicium is the Chemical element that has the symbol Si and Atomic number 14 Electropositivity is a measure of an element's ability to donate Electrons, and therefore form positive Ions.

Silicon is more electropositive than carbon. Electropositivity is a measure of an element's ability to donate Electrons, and therefore form positive Ions. Carbon (kɑɹbən is a Chemical element with the symbol C and its Atomic number is 6 Silicides are structurally closer to borides than to carbides. In chemistry a boride is a chemical compound between boron and a less electronegative element For the Software development tool targeting the Symbian OS, see Carbide

Similar to borides and carbides, the composition of silicides cannot be easily specified as covalent molecules. The chemical bonds in silicides range from conductive metal-like structures to covalent or ionic. An ionic bond (or electrovalent bond) is a type of Chemical bond that can often form between Metal and Non-metal Ions (or Silicides of all non-transition metals, with exception of beryllium, have been described. Beryllium (bəˈrɪliəm is a Chemical element with the symbol Be and Atomic number 4

Mercury, thallium, bismuth, and lead are nonmiscible with liquid silicon. Mercury (ˈmɜrkjʊri also called quicksilver or hydrargyrum, is a Chemical element with the symbol Hg ( Latinized hydrargyrum Thallium (ˈθæliəm is a Chemical element with the symbol Tl and Atomic number 81 Bismuth (ˈbɪzməθ is a Chemical element that has the symbol Bi and Atomic number 83 Characteristics Lead has a dull luster and is a dense, Ductile, very soft highly

Silicon atoms in silicides can have many possible organizations:

• Isolated silicon atoms: electrically conductive Cu₅Si, (V,Cr,Mn)₃Si, Fe₃Si, Mn₃Si, and nonconductive (Mg,Ge,Sn,Pb)₂Si, (Ca,Ru,Ce,Rh,Ir,Ni)₂Si)
• Si₂ pairs: U₃Si₂, Hf and Th silicides
• Si₄ tetrahedra: KSi, RbSi, CsSi
• Si_n chains: USi, (Ti, Zr, Hf, Th, Ce, Pu)Si, CaSi, SrSi, YSi
• Planar hexagonal graphite-like Si layers: β-USi₂, silicides of other lanthanoids and actinoids
• Corrugated hexagonal Si layers: CaSi₂
• Open three-dimensional Si skeletons: SrSi₂, ThSi₂, α-USi₂

Group 1 and 2 silicides e. Uranium (jʊˈreɪniəm is a silvery-gray Metallic Chemical element in the Hafnium (ˈhæfniəm is a Chemical element that has the symbol Hf and Atomic number 72 Thorium (ˈθɔːriəm is a Chemical element with the symbol Th and Atomic number 90 A tetrahedron (plural tetrahedra) is a Polyhedron composed of four triangular faces three of which meet at each vertex. Potassium (pəˈtæsiəm is a Chemical element. It has the symbol K (kalium from qalīy Atomic number 19 and Atomic mass 39 Rubidium (ruːˈbɪdiəm /rəˈbɪdiəm/ is a Chemical element with the symbol Rb and Atomic number 37 Caesium or cesium (ˈsiːziəm is the Chemical element with the symbol Cs and Atomic number 55 The Mineral graphite, as with Diamond and Fullerene, is one of the Allotropes of carbon. Terminology The Trivial name " Rare earths " is sometimes used to describe all the lanthanoids together with Scandium and Yttrium History of the actinoid series From the earlier known chemical properties of actinium (89 up to uranium (92 indicating a relation to the Transition metals it was generally g. Na₂Si and Ca₂Si react with water to yielding hydrogen and/or silanes. The transition metal silicides are, in contrast, usually inert to aqueous solutions of everything with exception of hydrofluoric acid; however, they react with more aggressive agents, eg. In Chemistry, the term transition metal (sometimes also called a transition element) has two possible meanings It commonly refers to any element in Hydrofluoric acid is a Solution of Hydrogen fluoride in Water. melted potassium hydroxide, or fluorine and chlorine when red-hot. Potassium hydroxide is the Inorganic compound with the formula K[[hydroxide OH]] Fluorine, fluorum meaning "to flow" is the Chemical element with the symbol F and Atomic number 9 Chlorine (ˈklɔriːn from the Greek word 'χλωρóς' ( khlôros, meaning 'pale green' is the Chemical element with Atomic number 17 and

Silicide prepared by a self-aligned process is called salicide. The term salicide refers to a technology used in the Microelectronics industry used to form electrical contacts between the semiconductor device and the supporting Interconnect This is a process in which silicide contacts are formed only in those areas in which deposited metal (which after annealing becomes a metal component of the silicide) is in direct contact with silicon, hence, the process is self-aligned. It is commonly implemented in MOS/CMOS processes for ohmic contacts of the source, drain, and poly-Si gate.

Examples

• nickel silicide, NiSi
• sodium silicide, Na₂Si
• magnesium silicide, Mg₂Si
• Platinum silicide, PtSi
• Titanium silicide, TiSi₂
• Tungsten silicide, WSi₂

See category for a list. Magnesium silicide, Mg2Si is an Inorganic compound consisting of Magnesium and Silicon. Platinum silicide () is a Semiconductor material used in Infrared detectors It is used in detectors for Infrared astronomy.

References

Greenwood, N. N. ; Earnshaw, A. (1997). Chemistry of the Elements, 2nd Edition, Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.  

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