Boron group
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| Group | 13 |
|---|---|
| Period | |
| 2 | 5 B |
| 3 | 13 Al |
| 4 | 32 Ga |
| 5 | 51 In |
| 6 | 81 Tl |
| 7 | 113 Uut |
The boron group is the series of elements in group 13 (IUPAC style) in the periodic table. The group has previously also been referred to as the earth metals and the triels, from the Latin tri, three, stemming from the naming convention of this group as Group IIIB. These elements are characterized by having three electrons in their outer energy levels (valence layers). Boron is considered a metalloid, and the rest are considered metals of the poor metals groups.
The boron group consists of boron (B), aluminium (Al), gallium (Ga), indium (In), thallium (Tl), and ununtrium (Uut) (unconfirmed).
Boron occurs sparsely probably because of disruption of its nucleus by bombardment with subatomic particles produced from natural radioactivity. Aluminum occurs widely on earth and in fact, it is the third most abundant element in the earth's crust (7.4%).
| Metalloids | Poor metals | atomic number in black are solids | solid borders are primordial elements (older than the Earth) | dotted borders are radioactive, synthetic elements |
|---|
Template:Inorganic-compound-stub
Periodic tables | |
|---|---|
| Layouts | Standard · Vertical · Full names · Names and atomic masses · Text for last · Huge table · Metals and nonmetals · Blocks · Valences · Inline f-block · 218 elements · Electron configurations · Atomic masses · Electronegativities · Alternatives |
| Lists of elements | Name · Atomic symbol · Atomic number · Boiling point · Melting point · Density · Atomic mass |
| Groups | 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17 · 18 |
| Periods: | 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 |
| Series | Alkalis · Alkaline earths · Lanthanides · Actinides · Transition metals · Poor metals · Metalloids · Nonmetals · Halogens · Noble gases |
| Blocks | s-block · p-block · d-block · f-block · g-block |
ast:Elementos del grupu 13 ca:Grup del bor cs:Triely de:Borgruppeeo:Elemento de grupo 13 ko:13족 원소 lmo:Grupp del bòor nl:Boorgroep ja:第13族元素 nn:Gruppe 13sr:13. група хемијских елемената sh:13. grupa hemijskih elemenata fi:Booriryhmä sv:Borgruppen th:หมู่โบรอน vi:Nhóm Bo
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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
