Template:Infobox gallium

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31 zinc ← gallium → germanium Al ↑ Ga ↓ In Periodic Table - Extended Periodic Table
General
Name, Symbol, Number	gallium, Ga, 31
Chemical series	poor metals
Group, Period, Block	13, 4, p
Appearance	silvery white
Standard atomic weight	69.723(1)  g·mol−1
Electron configuration	[Ar] 3d10 4s2 4p1
Electrons per shell	2, 8, 18, 3
Physical properties
Phase	solid
Density (near r.t.)	5.91  g·cm−3
Liquid density at m.p.	6.095  g·cm−3
Melting point	302.9146 K (29.7646 °C, 85.5763 °F)
Boiling point	2477 K (2204 °C, 3999 °F)
Heat of fusion	5.59  kJ·mol−1
Heat of vaporization	254  kJ·mol−1
Specific heat capacity	(25 °C) 25.86  J·mol−1·K−1
Vapor pressure P(Pa) 1 10 100 1 k 10 k 100 k at T(K) 1310 1448 1620 1838 2125 2518
Atomic properties
Crystal structure	orthorhombic
Oxidation states	3, 2 [1], 1 (amphoteric oxide)
Electronegativity	1.81 (Pauling scale)
Ionization energies (more)	1st:  578.8  kJ·mol−1
	2nd:  1979.3  kJ·mol−1
	3rd:  2963  kJ·mol−1
Atomic radius	130  pm
Atomic radius (calc.)	136  pm
Covalent radius	126  pm
Van der Waals radius	187 pm
Miscellaneous
Magnetic ordering	no data
Thermal conductivity	(300 K) 40.6  W·m−1·K−1
Speed of sound (thin rod)	(20 °C) 2740 m/s
Mohs hardness	1.5
Brinell hardness	60  MPa
CAS registry number	7440-55-3
Selected isotopes
Main article: Isotopes of infobox gallium iso NA half-life DM DE (MeV) DP 69Ga 60.11% 69Ga is stable with 38 neutrons 71Ga 39.89% 71Ga is stable with 40 neutrons
References

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