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The boron group are the chemical elements in group 13 of the periodic table, consisting of boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl) and nihonium (Nh). This group lies in the p-block of the periodic table. The elements in the boron group are characterized by having three valence electrons. [1] .
History. Preparation of elemental boron in the laboratory. Characteristics. Production. Applications. Biological role. See also. References. External links. Boron is a chemical element; it has symbol B and atomic number 5. In its crystalline form it is a brittle, dark, lustrous metalloid; in its amorphous form it is a brown powder.
- black-brown
- α-, β-rhombohedral, β-tetragonal (and more)
- 5
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The carbon group is a periodic table group consisting of carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl). It lies within the p-block . In modern IUPAC notation, it is called group 14. In the field of semiconductor physics, it is still universally called group IV.
Books. Boride. A boride is a compound between boron and a less electronegative element, for example silicon boride (SiB 3 and SiB 6 ). The borides are a very large group of compounds that are generally high melting and are covalent more than ionic in nature. Some borides exhibit very useful physical properties.
A borane is a compound with the formula BxHy or a related anion. Many such boranes are known. Most common are those with 1 to 12 boron atoms. Although they have few practical applications, the boranes exhibit structures and bonding that differs strongly from the patterns seen in hydrocarbons.
The chalcogens (ore forming) ( / ˈkælkədʒənz / KAL-kə-jənz) are the chemical elements in group 16 of the periodic table. [1] . This group is also known as the oxygen family. Group 16 consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive elements polonium (Po) and livermorium (Lv). [2] .
Boron trifluoride is the inorganic compound with the formula BF3. This pungent, colourless, and toxic gas forms white fumes in moist air. It is a useful Lewis acid and a versatile building block for other boron compounds. Structure and bonding. The geometry of a molecule of BF3 is trigonal planar.
