Search results
Results from the WOW.Com Content Network
Antimony has two stable isotopes: 121 Sb with a natural abundance of 57.36% and 123 Sb with a natural abundance of 42.64%. It also has 35 radioisotopes, of which the longest-lived is 125 Sb with a half-life of 2.75 years. In addition, 29 metastable states have been characterized. The most stable of these is 120m1 Sb with a half-life of 5.76
Structure of (PhSb) 6 [5] Distibines are formally Sb II compounds, but feature tricoordinate Sb atoms with a single Sb-Sb bond. They may have interest as thermochromes.For example, tetramethyldistibine is colorless when gas, yellow when liquid, red when solid just below the melting point of 18.5 °C, shiny-blue when cooler, and again yellow at cryogenic temperatures.
In 2010, more than half (54%) of all used dry binders consisted of SB-based latexes. [8] This amounted for roughly 1.2 million tonnes. It is also used in building applications, as a sealing and binding agent behind renders as an alternative to PVA, but is more expensive. In the latter application, it offers better durability, reduced shrinkage ...
A compound semiconductor is a semiconductor compound composed of chemical elements of at least two different species. These semiconductors form for example in periodic table groups 13–15 (old groups III–V), for example of elements from the Boron group (old group III, boron, aluminium, gallium, indium) and from group 15 (old group V, nitrogen, phosphorus, arsenic, antimony, bismuth).
For example, when silicon (Si), having four valence electrons, is to be doped as a n-type semiconductor, elements from group V like phosphorus (P) or arsenic (As) can be used because they have five valence electrons. A dopant with five valence electrons is also called a pentavalent impurity. [1] Other pentavalent dopants are antimony (Sb) and ...
It is attacked by concentrated nitric acid, yielding the hydrated pentoxide Sb 2 O 5. Aqua regia gives the pentachloride SbCl 5 and hot concentrated sulfuric acid results in the sulfate Sb 2 (SO 4) 3. [360] It is not affected by molten alkali. [361] Antimony is capable of displacing hydrogen from water, when heated: 2 Sb + 3 H 2 O → Sb 2 O 3 ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
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]