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.
Quick Facts Gallium, Panagway ...
| Gallium |
|---|
31Ga |
|
|
| Panagway |
silver-white
 |
| Kinatibuk-ang mga kinaiya |
| Ngalan, simbolo, kaiphan |
gallium, Ga, 31 |
| Paglitok |
[[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 |
|
| · r |
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