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For example, boron trifluoride (BF 3) combines eagerly with fluoride sources to give the tetrafluoroborate anion, BF 4 −. Boron trifluoride is used in the petrochemical industry as a catalyst. The halides react with water to form boric acid. [51] Other boron halides include those with B-B bonding, such as B 2 F 4 and B 4 Cl 4. [55]
The mean oxidation number for the boron atoms is then simply the ratio of hydrogen to boron in the molecule. For example, in diborane B 2 H 6, the boron oxidation state is +3, but in decaborane B 10 H 14, it is 7 / 5 or +1.4. In these compounds the oxidation state of boron is often not a whole number.
The boron group is notable for trends in the electron configuration, as shown above, and in some of its elements' characteristics. Boron differs from the other group members in its hardness, refractivity and reluctance to participate in metallic bonding. An example of a trend in reactivity is boron's tendency to form reactive compounds with ...
This family of boron hydrides includes mono- and dialkylboranes. The simplest members readily engage in redistribution reactions: 2 BH 2 (CH 3) → BH(CH 3) 2 + 0.5 B 2 H 6. With bulky substituents, primary and secondary boranes are more readily isolable and even useful. Examples include thexylborane and 9-BBN. Almost all primary and secondary ...
The elements commonly classified as metalloids are boron, silicon, germanium, arsenic, antimony and tellurium. [n 4] The status of polonium and astatine is not settled. Most authors recognise one or the other, or both, as metalloids; Herman, Hoffmann and Ashcroft, on the basis of relativistic modelling, predict astatine will be a monatomic metal.
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).
Boron compounds include all chemical compounds including the element boron. For an alternative listing of boron compounds, please check inorganic_compounds_by_element#Boron . Wikimedia Commons has media related to Boron compounds .
Boron carbide – B 4 C [143] Boron nitride – BN [144] Boron suboxide – B 6 O [145] Boron tribromide – BBr 3 [146] Boron trichloride – BCl 3 [147] Boron trifluoride – BF 3 [148] Boron triiodide –BI 3 [149] Boron oxide – B 2 O 3 [150] Boroxine – B 3 H 3 O 3 [151] Decaborane – B 10 H 14 [152] Diborane – B 2 H 6 [153] Diboron ...