Galio

Ang galio (Iningles gallium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Ga ug kaiphan nga atomik 31. Ang galio mao ang puthaw.

Gallium
31Ga
Al ↑ Ga ↓ In Periodic table zinc ← gallium → germanium
Panagway
silver-white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	gallium, Ga, 31
Paglitok	/[unsupported input]ˈɡæliəm/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-ee-əm]]
Kategoriyang elemento	post-transition metal
Group, period, block	13, 4, p
Gibug-aton sa atomo	69.723(1)
Kontorno sa elektron	[Ar] 4s2 3d10 4p1 2, 8, 18, 3 Electron shells of gallium (2, 8, 18, 3)
History
Prediction	Dmitri Mendeleev (1871)
Pagkadiskobre	Lecoq de Boisbaudran (1875)
First isolation	Lecoq de Boisbaudran (1875)
Physical properties
Phase	magahi
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
Molar heat capacity	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
Oxidation states	3, 2, 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	135 pm
Covalent radius	122±3 pm
Van der Waals radius	187 pm
Miscellanea
Crystal structure	orthorhombic
Magnetic ordering	diamagnetic
Electrical resistivity	(20 °C) 270 nΩ·m
Thermal conductivity	40.6 W·m−1·K−1
Thermal expansion	(25 °C) 18 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 2740 m·s−1
Young's modulus	9.8 GPa
Poisson ratio	0.47
Mohs hardness	1.5
Brinell hardness	60 MPa
CAS registry number	7440-55-3
Most stable isotopes
Main article: Isotopes of 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

Galeriya sa hulagway

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