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Properties. Antimony is a member of group 15 of the periodic table, one of the elements called pnictogens, and has an electronegativity of 2.05. In accordance with periodic trends, it is more electronegative than tin or bismuth, and less electronegative than tellurium or arsenic.
Stibnite, sometimes called antimonite, is a sulfide mineral with the formula Sb 2 S 3. This soft grey material crystallizes in an orthorhombic space group. [6] It is the most important source for the metalloid antimony. [7] The name is derived from the Greek στίβι stibi through the Latin stibium as the former name for the mineral and the ...
Its trihalides, antimony trifluoride, antimony trichloride, antimony tribromide, and antimony triiodide, like all pnictogen trihalides, each have trigonal pyramidal molecular geometry. The +3 oxidation state is bismuth's most common oxidation state because its ability to form the +5 oxidation state is hindered by relativistic properties on ...
Antimony, showing its brilliant lustre. Antimony is a silver-white solid with a blue tint and a brilliant lustre. It is stable in air and moisture at room temperature. Antimony has a density of 6.697 g/cm 3, and is moderately hard (MH 3.0; about the same as copper). It has a rhombohedral crystalline structure (CN 3).
A metalloid is a chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. The word metalloid comes from the Latin metallum ("metal") and the Greek oeides ("resembling in form or appearance"). [1] There is no standard definition of a metalloid and no complete agreement on which ...
Pure bismuth is a semimetal, containing a small band gap, which leads to it having a relatively high conductivity (7.7 × 105 S/m at 20 °C). When the bismuth is doped with antimony, the conduction band decreases in energy and the valence band increases in energy. At an antimony concentration of 4%, the two bands intersect, forming a Dirac ...
Indium antimonide (InSb) is a crystalline compound made from the elements indium (In) and antimony (Sb). It is a narrow- gap semiconductor material from the III - V group used in infrared detectors, including thermal imaging cameras, FLIR systems, infrared homing missile guidance systems, and in infrared astronomy.
Isotopes of antimony (51Sb) Antimony (51 Sb) occurs in two stable isotopes, 121 Sb and 123 Sb. There are 37 artificial radioactive isotopes, the longest-lived of which are 125 Sb, with a half-life of 2.75856 years; 124 Sb, with a half-life of 60.2 days; and 126 Sb, with a half-life of 12.35 days. All other isotopes have half-lives less than 4 ...