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Gallium |
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Pípè | /ˈɡæliəm/ (GAL-ee-əm) |
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Ìhànsójú | silvery white |
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Ìwúwo átọ̀mù Ar, std(Ga) | 69.723(1)[1] |
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Gallium ní orí tábìlì àyè |
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Nọ́mbà átọ̀mù (Z) | 31 |
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Ẹgbẹ́ | group 13 (boron group) |
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Àyè | àyè 4 |
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Àdìpọ̀ | Àdìpọ̀-p |
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Ẹ̀ka ẹ́límẹ́ntì | Post-transition metal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Ar] 3d10 4s2 4p1 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 3 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 302.9146 K (29.7646 °C, 85.5763 °F) |
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Ígbà ìhó | 2477 K (2204 °C, 3999 °F) |
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Kíki (near r.t.) | 5.91 g/cm3 |
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when liquid (at m.p.) | 6.095 g/cm3 |
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Heat of fusion | 5.59 kJ/mol |
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Heat of | 254 kJ/mol |
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Molar heat capacity | 25.86 J/(mol·K) |
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pressure
P (Pa)
|
1
|
10
|
100
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1 k
|
10 k
|
100 k
|
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at T (K)
|
1310
|
1448
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1620
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1838
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2125
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2518
|
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Atomic properties |
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Oxidation states | −5, −4, −3,[2] −2, −1, +1, +2, +3[3] Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 1.81 |
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energies | |
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Atomic radius | empirical: 135 pm |
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Covalent radius | 122±3 pm |
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Van der Waals radius | 187 pm |
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Spectral lines of gallium |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | orthorhombic |
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Speed of sound thin rod | 2740 m/s (at 20 °C) |
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Thermal expansion | 1.2 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 40.6 W/(m·K) |
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Electrical resistivity | 270 Ω·m (at 20 °C) |
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Magnetic ordering | diamagnetic |
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Young's modulus | 9.8 GPa |
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Poisson ratio | 0.47 |
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Mohs hardness | 1.5 |
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Brinell hardness | 60 MPa |
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CAS Number | 7440-55-3 |
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Main isotopes of gallium |
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Àdàkọ:Category-inline | references |