Template:Infobox gallium

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Gallium, 31Ga
Gallium
Pronunciation/ˈɡæliəm/ ​(GAL-ee-əm)
Appearancesilvery blue
Standard atomic weight Ar°(Ga)
  • 69.723±0.001 
  • 69.723±0.001 (abridged)
Gallium in the periodic table
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

↑
Ga
↓
← gallium →
Atomic number (Z)31
Electron configuration[Ar] 3d10 4s2 4p1
Electrons per shell2, 8, 18, 3
Physical properties
Phase at STPsolid
Melting point302.9146 K ​(29.7646 °C, ​85.5763 °F)
Boiling point2676 K ​(2403 °C, ​4357 °F)[1][2]
Density (at 20° C)5.907 g/cm3[3]
when liquid (at m.p.)6.095 g/cm3
Heat of fusion5.59 kJ/mol
Heat of vaporization256 kJ/mol[1]
Molar heat capacity25.86 J/(mol·K)
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1310 1448 1620 1838 2125 2518
Atomic properties
Oxidation states−5, −4, −3,[4] −2, −1, 0, +1, +2, +3[5] (an amphoteric oxide)
ElectronegativityPauling scale: 1.81
Ionization energies
  • 1st: 578.8 kJ/mol
  • 2nd: 1979.3 kJ/mol
  • 3rd: 2963 kJ/mol
  • (more)
Atomic radiusempirical: 135 pm
Covalent radius122±3 pm
Van der Waals radius187 pm
Color lines in a spectral range
Color lines in a spectral range
Spectral lines of gallium
Other properties
Natural occurrenceprimordial
Crystal structure ​base-centered orthorhombic (oS8)
Lattice constants
Base-centered orthorhombic crystal structure for gallium
a = 452.05 pm
b = 766.25 pm
c = 452.66 pm (at 20 °C)[3]
Thermal expansion20.5×10−6/K (at 20 °C)[3][lower-alpha 1]
Thermal conductivity40.6 W/(m⋅K)
Electrical resistivity270 nΩ⋅m (at 20 °C)
Magnetic orderingdiamagnetic
Molar magnetic susceptibility−21.6×10−6 cm3/mol (at 290 K)[6]
Young's modulus9.8 GPa
Speed of sound thin rod2740 m/s (at 20 °C)
Poisson ratio0.47
Mohs hardness1.5
Brinell hardness56.8–68.7 MPa
CAS Number7440-55-3
History
Namingafter Gallia (Latin for: France), homeland of the discoverer
PredictionDmitri Mendeleev (1871)
Discovery and first isolationLecoq de Boisbaudran (1875)
Isotopes of gallium
Template:infobox gallium isotopes does not exist
カテゴリ Category: Gallium
| references
Ga · Gallium
Zn ←

ibox Zn

iso
31 Ga  [e]
IB-Ga [e]
IBisos [e]
 → Ge

ibox Ge

indexes by PT (page)
Data sets read by {{Infobox element}}
Name and identifiers
Symbol etymology (11 non-trivial)
Top image (caption, alt)
Pronunciation
Allotropes (overview)
Group (overview)
Period (overview)
Block (overview)
Natural occurrence
Phase at STP
Oxidation states
Spectral lines image
Electron configuration (cmt, ref)
Isotopes
Standard atomic weight
  most stable isotope
Wikidata
Wikidata *
* Not used in {{Infobox element}} (2023-01-01)
See also {{Index of data sets}} · Cat:data sets (0) · (this table:
)

Notes

  1. ↑ The thermal expansion is anisotropic: the parameters (in the range 280–302.9 K) are αa = 31.9×10−6/K, αb = 16.2×10−6/K, αc = 13.3×10−6/K, and αaverage = 20.5×10−6/K.[3]

References

These references will appear in the article, but this list appears only on this page.
  1. ↑ 1.0 1.1 Zhang Y; Evans JRG; Zhang S (2011). "Corrected Values for Boiling Points and Enthalpies of Vaporization of Elements in Handbooks". J. Chem. Eng. Data. 56 (2): 328–337. doi:10.1021/je1011086.
  2. ↑ "Gallium (CAS Number 7440-55-3) : Strem Product Catalog". Strem Chemicals Inc. Retrieved 4 December 2023.
  3. ↑ 3.0 3.1 3.2 3.3 Arblaster, John W. (2018). Selected Values of the Crystallographic Properties of Elements. Materials Park, Ohio: ASM International. ISBN 978-1-62708-155-9.
  4. ↑ Ga(−3) has been observed in LaGa, see Dürr, Ines; Bauer, Britta; Röhr, Caroline (2011). "Lanthan-Triel/Tetrel-ide La(Al,Ga)x(Si,Ge)1-x. Experimentelle und theoretische Studien zur Stabilität intermetallischer 1:1-Phasen" (PDF). Z. Naturforsch. (in German). 66b: 1107–1121.
  5. ↑ Hofmann, Patrick (1997). Colture. Ein Programm zur interaktiven Visualisierung von Festkörperstrukturen sowie Synthese, Struktur und Eigenschaften von binären und ternären Alkali- und Erdalkalimetallgalliden (PDF) (Thesis) (in German). PhD Thesis, ETH Zurich. p. 72. doi:10.3929/ethz-a-001859893. hdl:20.500.11850/143357. ISBN 978-3728125972.
  6. ↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4.
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