Compound properties Element reactions List all B propertiesName: boron Symbol: B Atomic number: 5 Relative atomic mass (Ar): 10.81 range: [10.806, 10.821] m [see notes g m r] Standard state: solid at 298 K Appearance: black Classification: Semi-metallic Group in periodic table: 13 Gr...
The boron is indicated in the periodic table with B symbol and its atom number is 5 and the atomic weight is 10,81. The boron element, which has semi-metallic and semi-conductive properties, is contained in group 3A of the periodic table. Boron consists of two stable isotopes, called ...
About this element Symbol:B Date of discovery:1808 Name origin:Arabic buraq Appearance:brownish Discoverer:Sir Davy, et al. Obtained from:kernite Melting point:2349 K Boiling point:4200 K Density[kg/m3]:2460 Molar volume:4.39 × 10-6m3/mol ...
Boron (atomic symbol: B, atomic number: 5) is a Block P, Group 13, Period 2 element with an atomic weight of 10.81. The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [He] 2s2p. The boron atom has a radius of 90 pm and a Van der Wa...
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boron: Symbol B. An element ofgroup 13 (formerly IIIB) of the periodictable; a.n. 5; r.a.m. 10.81; r.d.2.34–2.37 (amorphous); m.p. 2300°C;b.p. 2550°C. It forms two allotropes;amorphous boron is a brown powderbut metallic boron is black. Themetallic form is very hard (...
Boron is an element of chemistry that has atomic number 5. The chemical symbol of elemental boron is B. It is dark in colour, brittle, lustrous metalloid in its crystalline form on the other side; when it is amorphous boron, it is found in powder form coloured in brown. It is one of...
Boron Symbol:B Boron Atomic Number:5 Boron Atomic Weight:10.811 What is Boron? Boron (symbol B, atomic number 5)is a chemical element and a metalloid. Because stellar nucleosynthesis does not lead to the production of boron, it is only available in small amounts in the earth's crust and...
n.SymbolB A nonmetallic element that is amorphous and brown or crystalline and black, and is extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys. Atomic number 5; atomic weight 10.811; melting point...
(redirected fromBoron (element)) Dictionary Thesaurus Medical boron(bōrˈŏn)[New Gr. fromborax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300℃; sublimation point about 2,550℃; sp. gr. 2.3 at 25℃; valence +3. ...