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  • Mercury is a heavy, silvery-white metal. As compared to other metals, it is a poor conductor of heat, but a fair conductor of electricity.<ref n ...hell is the reason for the much higher melting temperature of [[cadmium]]. Metals such as [[gold]] have atoms with one less 6s electron than mercury. Those e
    69 KB (10,077 words) - 21:35, 20 September 2010
  • ...the material. Examples include [[wiktionary:ash|ash]] and [[debris]] in [[metals]] and leaf pieces in blank white papers. The removal of impurities is usual ...e solid. The solid is eventually formed when [[dynamic arrest]] or [[glass transition]] occurs, but it forms into an [[amorphous solid]] &mdash; a [[glass]], ins
    4 KB (592 words) - 10:08, 20 September 2010
  • ...ilure]]s, as opposed to the normally much more gentle [[failure mode]]s of metals. Some ceramics are [[semiconductor]]s. Most of these are [[transition metal oxides]] that are II-VI semiconductors, such as [[zinc oxide]].
    28 KB (3,876 words) - 10:08, 20 September 2010
  • .... Among the ionic solids are compounds formed by alkali and alkaline earth metals in combination with halogens; a classic example is table salt, [[sodium chl ...les are metals such as [[copper]] and [[aluminum]], but some materials are metals in an electronic sense but have negligible metallic bonding in a mechanical
    11 KB (1,614 words) - 10:08, 20 September 2010
  • ...ists]</ref> In the deep ultraviolet (DUV) spectrum, the π-π* electronic transition in [[benzene]] <ref>{{cite journal|url=http://www.jsrmicro.com/download/200 ...adhesion to various substrates such as Si, GaAs, InP and glass, as well as metals, including Au, Cu and Al, compared to positive-tone photoresists. Additiona
    16 KB (2,176 words) - 10:09, 20 September 2010
  • The transition from micro- to nano-particles lead to change in its physical as well as che ...minute for temperatures about 50 K above the melting temperature or glass transition temperature, even for highly viscous polymers, such as, for instance, polyt
    15 KB (2,273 words) - 10:09, 20 September 2010
  • ...] or [[Environmental stress fracture]] to describe this type of failure in metals. ...chain mobility. The result is a decrease in the yield stress and [[glass transition temperature]] (T<sub>g</sub>), as well as a plasticisation of the material
    9 KB (1,372 words) - 10:09, 20 September 2010
  • ...ties are influenced by a 400-450°F continuous use temperature and a glass transition of {{convert|500|F}}. ...ircraft-aerospace applications, which are replacing heavier more expensive metals.
    10 KB (1,378 words) - 10:10, 20 September 2010
  • | [[Glass transition temperature|Glass temperature]] ...PVC, foreign matter, removal of film, paper, glass, sand, soil, stones and metals
    43 KB (6,272 words) - 10:11, 20 September 2010
  • ...g chain branches may increase polymer strength, toughness, and the [[glass transition temperature]] (T<sub>g</sub>) due to an increase in the number of entanglem ...se chain mobility, increase strength and toughness, and increase the glass transition temperature (T<sub>g</sub>){{Citation needed|date=May 2009}}. This is a res
    45 KB (6,501 words) - 10:11, 20 September 2010
  • ...[[water]]) can behave like ligands, and enter into coordination bonds with metals. ..., [[thermodynamic]] site for [[crystal growth]] to occur. More molecules (metals and ligands) can self-assemble onto the growing crystal in a periodic array
    23 KB (3,302 words) - 10:11, 20 September 2010
  • ...ated that certain salicylaldimine complexes of [[Group 4 element|Group 4]] metals show substantially higher activity than the metallocenes. ...|crystallinity]] and [[molecular weight]], a [[melting point]] and [[glass transition]] may or may not be observable. The temperature at which these occur varies
    20 KB (2,802 words) - 10:11, 20 September 2010
  • |title = Metals |header7 = [[Transition metal]]s
    24 KB (3,311 words) - 10:13, 20 September 2010
  • ...ite has a [[Cubic crystal system|face center cubic]] (FCC) structure. The transition between these two structures requires very little [[thermal activation]] en [[Category:Metals]]
    5 KB (642 words) - 10:13, 20 September 2010
  • [[Image:Metallic bond Zn.svg|thumb|right|200px|Metallic bonding is found in metals like [[zinc]].]] ...enerated title -->]</ref><ref>[http://www.chemguide.co.uk/atoms/structures/metals.html metal structures<!-- Bot generated title -->]</ref><ref>[http://hyperp
    26 KB (4,024 words) - 10:13, 20 September 2010
  • ...ir mixtures, which are called [[alloy]]s. It is also the [[technology]] of metals: the way in which science is applied to their practical use. Metallurgy is ...ing to get [[copper]] and [[tin]] by heating rocks and combining those two metals to make an [[alloy]] called [[bronze]], the technology of metallurgy began
    14 KB (1,922 words) - 10:13, 20 September 2010
  • ...]] of the [[platinum group]] of the [[periodic table]]; and like the other metals of the platinum group, ruthenium is inert to most other chemicals. The Russ ...rvey USGS|accessdate = 2008-09-16|title = Commodity Report: Platinum-Group Metals}}</ref>
    39 KB (5,430 words) - 10:13, 20 September 2010
  • ...can'', 2007-07-26. Retrieved on 2007-08-05.</ref> Research is ongoing, and metals less expensive than platinum have also been used in its creation. ...s of the suitable [[noble metal|noble]] or [[transition metal|transition]] metals. The impregnated hydrogel is then irradiated with [[gamma ray]]s, leading t
    26 KB (3,758 words) - 10:14, 20 September 2010
  • ...l fishing craft, these are bi-fuel engines that start on gasoline and then transition to kerosene once the engine reaches engine temperature. Multi-fuel Evinrud
    26 KB (3,820 words) - 10:18, 20 September 2010
  • ...such as carbon. This process, known as [[smelting]], was first applied to metals with lower [[melting]] points, such as [[tin]], which melts at approximatel ...''Steel before Bessemer: I Blister Steel: the birth of an industry'' (The Metals Society, London, 1984), 48-52.</ref> It was produced by Sir [[Basil Brooke
    44 KB (6,419 words) - 10:22, 20 September 2010
  • .../ref><ref>{{Citation | last = Scoffern | first = John | title = The useful metals and their alloys | page = 6 | publisher = Houlston & Wright | year = 1869 | ...ndian Iron, Vikas Kumar and R. Balasubramaniam, ''International Journal of Metals, Materials and Processes'', Volume 14 (2002) pp. 1–14</ref> Furthermore,
    35 KB (5,392 words) - 10:22, 20 September 2010
  • ...state]]s. Iron and iron [[alloy]]s ([[steel]]s) are by far the most common metals and the most common [[ferromagnetic]] materials in everyday use. Fresh iron ...loying iron with appropriate small amounts (up to a few per cent) of other metals and carbon produces [[steel]], which can be 1,000&nbsp;times harder than pu
    67 KB (9,808 words) - 10:24, 20 September 2010
  • ...have been used as [[N-heterocyclic carbene]] ligands on various transition metals. It is found in the commercially available second generation [[Grubbs' cata
    2 KB (260 words) - 13:15, 20 September 2010
  • ...discovered the ability of ethylene oxide to react with acids and salts of metals.<ref name="oe1">{{cite book When carrying the thermal decomposition of ethylene oxide in the presence of transition metal compounds as catalysts, it is possible not only to reduce its tempera
    82 KB (11,709 words) - 21:31, 20 September 2010
  • ...]]s. The [[permanganate]]s of [[alkali metal|alkali]] and [[alkaline earth metals]] are powerful oxidizers. Manganese dioxide is used as the cathode (electro ...to give the atom a change in spin of two units. The unlikeliness of such a transition is seen in the uniformly pale and almost colorless nature of Mn(II) compoun
    44 KB (6,128 words) - 21:32, 20 September 2010
  • ...oatings: coatings for protection from oxidation of superalloys, refractory metals, and graphite|author = National Research Council (U.S.). Committee on Coati Chromium is a member of the [[transition metal]]s, in [[Group 6 element|group 6]]. Chromium(0) has an electronic con
    51 KB (7,299 words) - 21:34, 20 September 2010
  • ...hemistry'', 6th Edition, John Wiley and Sons (1999) Chapter 16: Survey of Transition-Metal Chemistry p. 633 ISBN 0471199575</ref> Average concentration in the e ...r [[laser]]. The highly [[monochromatic]] color arises from the 441.563 nm transition [[spectral line|line]] of cadmium.]]
    34 KB (4,743 words) - 21:34, 20 September 2010
  • ...]) seam. Materials recovered by mining include [[base metals]], [[precious metals]], [[iron]], [[uranium]], [[coal]], [[diamond]]s, [[limestone]], [[oil shal ...ious metals were also used mainly for gilding or coinage. Initially, many metals were obtained through [[open-pit mining]], and ore was primarily extracted
    50 KB (7,414 words) - 21:36, 20 September 2010
  • ...ing the ligands to alter the type of [[molecular encapsulation]] needed to metals; ...ands (and sometimes their bidentate versions Bm) are such that with late [[transition metal]]s such as osmium and [[platinum]] it is possible to turn the Tm liga
    9 KB (1,297 words) - 20:14, 21 September 2010
  • ...349-383. {{DOI|10.1021/cr020604g}}</ref> Terpy forms complexes with most [[transition metal]] [[ion]] as do other [[polypyridine complex|polypyridine compounds]] Because they are pi-acceptors, terpy and [[bipyridine]] too stabilize metals in lower oxidation states. For instance in [[acetonitrile]] solution, it is
    4 KB (504 words) - 20:14, 21 September 2010
  • Corrole normally serves as a [[anion|trianionic]] [[ligand]] with [[transition metal]]s.
    1 KB (143 words) - 20:14, 21 September 2010
  • ...entate]] [[Chelation|chelating]] [[ligand]], forming complexes with many [[transition metal]]s. [[Ruthenium]] complex and [[platinum]] complexes of bipy exhibit These and other [[homoleptic]] tris-2,2'-bipy complexes of many transition [[metals]] are electroactive. Often, both the [[metal]] centred and ligand centred
    5 KB (638 words) - 20:14, 21 September 2010
  • ...metric and binds to one face of an octahedron of metalloids and transition metals. The (TACN)M unit is kinetically inert, allowing further synthetic transfor *Although TACN characteristically coordinates to metals in mid- and high oxidation states, e.g. Ni(III), Mn(IV), Mo(III), W(III),
    5 KB (765 words) - 20:14, 21 September 2010
  • ...ry amines and carbon disulfide. They are used as [[chelating agents]] for transition metal ions and as precursors to [[herbicide]]s and [[vulcanization]] reagen The diethyldithiocarbamate ion chelates to many "[[HSAB theory|softer]]" metals via the two sulfur atoms. Other more complicated bonding modes are known i
    5 KB (586 words) - 20:15, 21 September 2010
  • ...In contrast, [[EDTA]] possesses 6 centres to form coordination bonds with metals.<ref>Each nitrogen centre counts as a centre of coordination, as does each ...]], DTPA wraps around a metal ion by forming up to eight bonds. Transition metals, however, usually have a limited coordination capacity and can form less th
    6 KB (825 words) - 20:15, 21 September 2010
  • The acetylacetonate [[anion]] forms complexes with many [[transition metal]] ions wherein both oxygen atoms bind to the metal to form a six-memb ...carbon atom; this bonding mode is more common for the third-row transition metals such as platinum(II) and iridium(III).
    16 KB (2,268 words) - 20:15, 21 September 2010
  • Triphos forms complexes with many [[transition metal]]s. It usually functions as a tripodal ligand that occupies three fac
    4 KB (589 words) - 20:15, 21 September 2010
  • ...[[peroxide]] bleaching to prevent degradation of peroxides by [[transition metals]].
    4 KB (491 words) - 20:15, 21 September 2010
  • ...compounds via [[ion exchange]]. It is noteworthy for its ability to bind [[transition metal]] ions. A concentrated solution of metals is obtained by eluting the resin with a small volume of 2 [[molarity|M]] [[
    1 KB (161 words) - 20:16, 21 September 2010
  • ...[[Coordination complex|complexes]] of the [[divalent]] ions of first-row [[transition metal]]s, the [[Stability constants of complexes|stability constant]] for t ...H. M. N. H.| coauthors=Williams, R. J. P.|date=1953|title=The stability of transition-metal complexes|journal=[[Journal of the Chemical Society|J. Chem. Soc.]]|p
    4 KB (545 words) - 20:16, 21 September 2010
  • ...particular cases. For example, phosphates form weak complexes with alkali metals, so, when determining stability constants involving phosphates, such as [[a ...}}</ref> In this classification, class A metals are hard acids and class B metals are soft acids. Some ions, such as copper(i) anr classed as borderline. Har
    50 KB (7,450 words) - 20:16, 21 September 2010
  • ...dral MO<sub>6</sub> units are common in oxyanions of the larger transition metals. Some compounds, such as salts of the chain-polymeric ion, Mo<sub>2</sub>O<
    15 KB (2,364 words) - 20:16, 21 September 2010
  • ...es.<ref name=coe>Coe, B. J.; Glenwright, S. J. Trans-effects in octahedral transition metal complexes. ''Coordination Chemistry Reviews'' '''2000''', ''203'', 5- ...ert H. Crabtree]] | title = The Organometallic Chemistry of the Transition Metals | year = 2005 | edition = 4th edition | isbn = 0-471-66256-9 | publisher =
    5 KB (796 words) - 20:17, 21 September 2010
  • ...(LFT), which delivers insight into the process of [[chemical bonding]] in transition metal complexes. According to CFT, the interaction between a transition metal and [[ligand]]s arises from the attraction between the positively cha
    15 KB (2,403 words) - 20:17, 21 September 2010
  • [[Crystal field theory]] may be used to explain the relative stabilities of transition metal compounds of different coordination geometry, as well as the presence ...st neighbours in a cubic geometry. In [[periodic table (crystal structure)|metals]] with the face centred cubic (fcc) structure each atom has twelve nearest
    11 KB (1,577 words) - 20:18, 21 September 2010
  • ...le = Molecular hydrogen complexes: coordination of a σ bond to transition metals
    11 KB (1,575 words) - 20:18, 21 September 2010
  • ...d on the trends in the absorption spectra of [[isoelectronic]] [[first-row transition metal]]s. The plots of the energies calculated for the electronic states of |contribution=Interpretation of the spectra of first-row transition metal complexes
    23 KB (3,526 words) - 20:18, 21 September 2010
  • ...ganometallic chemistry]] <ref>''The Organometallic Chemistry of Transition Metals'' by Robert Crabtree</ref><ref>''Inorganic Chemistry'' (3rd Edition) by Gar
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  • ==Transition metal chemistry== ...ct is most often encountered in [[octahedral complex]]es of the transition metals, and is very common in six-coordinate [[copper]](II) complexes.<ref>{{cite
    8 KB (1,101 words) - 20:18, 21 September 2010
  • ...ectronic repulsion parameter]], given the symbol ''B'', that occurs when a transition metal free ion forms a [[complex (chemistry)|complex]] with [[ligands]]. Th ...ughly reflects the ability of the ligands to form good covalent bonds with metals - those that do not have a very small effect and are at the start of the se
    3 KB (429 words) - 20:18, 21 September 2010

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