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Indium |
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Pípè | /ˈɪndiəm/ (IN-dee-əm) |
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Ìhànsójú | silvery lustrous gray |
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Ìwúwo átọ̀mù Ar, std(In) | 114.818(1)[1] |
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Indium ní orí tábìlì àyè |
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|
Nọ́mbà átọ̀mù (Z) | 49 |
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Ẹgbẹ́ | group 13 (boron group) |
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Àyè | àyè 5 |
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Àdìpọ̀ | Àdìpọ̀-p |
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Ẹ̀ka ẹ́límẹ́ntì | Post-transition metal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Kr] 4d10 5s2 5p1 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 18, 3 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 429.7485 K (156.5985 °C, 313.8773 °F) |
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Ígbà ìhó | 2345 K (2072 °C, 3762 °F) |
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Kíki (near r.t.) | 7.31 g/cm3 |
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when liquid (at m.p.) | 7.02 g/cm3 |
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Heat of fusion | 3.281 kJ/mol |
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Heat of | 231.8 kJ/mol |
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Molar heat capacity | 26.74 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)
|
1196
|
1325
|
1485
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1690
|
1962
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2340
|
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Atomic properties |
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Oxidation states | −5, −2, −1, +1, +2, +3[2] Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 1.78 |
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Atomic radius | empirical: 167 pm |
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Covalent radius | 142±5 pm |
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Van der Waals radius | 193 pm |
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Spectral lines of indium |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | tetragonal |
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Speed of sound thin rod | 1215 m/s (at 20 °C) |
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Thermal expansion | 32.1 µm/(m·K) (at 25 °C) |
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Thermal conductivity | 81.8 W/(m·K) |
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Electrical resistivity | 83.7 n Ω·m (at 20 °C) |
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Magnetic ordering | diamagnetic[3] |
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Young's modulus | 11 GPa |
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Mohs hardness | 1.2 |
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Brinell hardness | 8.83 MPa |
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CAS Number | 7440-74-6 |
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Main isotopes of indium |
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Àdàkọ:Category-inline | references |