Chemical elements in group 13 of the periodic table
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Boron group (group 13)
Hydrogen
Helium
Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
Sodium
Magnesium
Aluminium
Silicon
Phosphorus
Sulfur
Chlorine
Argon
Potassium
Calcium
Scandium
Titanium
Vanadium
Chromium
Manganese
Iron
Cobalt
Nickel
Copper
Zinc
Gallium
Germanium
Arsenic
Selenium
Bromine
Krypton
Rubidium
Strontium
Yttrium
Zirconium
Niobium
Molybdenum
Technetium
Ruthenium
Rhodium
Palladium
Silver
Cadmium
Indium
Tin
Antimony
Tellurium
Iodine
Xenon
Caesium
Barium
Lanthanum
Cerium
Praseodymium
Neodymium
Promethium
Samarium
Europium
Gadolinium
Terbium
Dysprosium
Holmium
Erbium
Thulium
Ytterbium
Lutetium
Hafnium
Tantalum
Tungsten
Rhenium
Osmium
Iridium
Platinum
Gold
Mercury (element)
Thallium
Lead
Bismuth
Polonium
Astatine
Radon
Francium
Radium
Actinium
Thorium
Protactinium
Uranium
Neptunium
Plutonium
Americium
Curium
Berkelium
Californium
Einsteinium
Fermium
Mendelevium
Nobelium
Lawrencium
Rutherfordium
Dubnium
Seaborgium
Bohrium
Hassium
Meitnerium
Darmstadtium
Roentgenium
Copernicium
Nihonium
Flerovium
Moscovium
Livermorium
Tennessine
Oganesson
group 12 ← → carbon group
IUPAC group number
13
Name by element
boron group
Trivial name
triels
CAS group number (US, pattern A-B-A)
IIIA
old IUPAC number (Europe, pattern A-B)
IIIB
↓ Period
2
Boron (B) 5 Metalloid
3
Aluminium (Al) 13 Other metal
4
Gallium (Ga) 31 Other metal
5
Indium (In) 49 Other metal
6
Thallium (Tl) 81 Other metal
7
Nihonium (Nh) 113 other metal
Legend
primordial element
synthetic element
Atomic number color:
black=solid
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] These elements have also been referred to as the triels.[a]
Several group 13 elements have biological roles in the ecosystem. Boron is a trace element in humans and is essential for some plants. Lack of boron can lead to stunted plant growth, while an excess can also cause harm by inhibiting growth. Aluminium has neither a biological role nor significant toxicity and is considered safe. Indium and gallium can stimulate metabolism;[3] gallium is credited with the ability to bind itself to iron proteins. Thallium is highly toxic, interfering with the function of numerous vital enzymes, and has seen use as a pesticide.[4]
^Kotz, John C.; Treichel, Paul & Townsend, John Raymond (2009). Chemistry and chemical reactivity. Vol. 2. Belmont, Ca, USA: Thomson Books. p. 351. ISBN 978-0-495-38712-1.
^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 227. ISBN 978-0-08-037941-8.
^Pharmacology and Nutritional Intervention in the Treatment of Disease edited by Faik Atroshi, page 45
^Dobbs, Michael (2009). Clinical neurotoxicology: syndromes, substances, environments. Philadelphia, Pa: Saunders. pp. 276–278. ISBN 978-0-323-05260-3.
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