Gallium

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

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Gallium

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