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Iodine |
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Pípè | /ˈaɪədaɪn,_ʔdɪn,_ʔdiːn/ (EYE-ə-dyn-,_--din) |
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Ìhànsójú | solid violet-dark gray, lustrous |
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Ìwúwo átọ̀mù Ar, std(I) | 126.90447(3)[1] |
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Iodine ní orí tábìlì àyè |
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Nọ́mbà átọ̀mù (Z) | 53 |
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Ẹgbẹ́ | group 17 (halogens) |
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Àyè | àyè 5 |
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Àdìpọ̀ | Àdìpọ̀-p |
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Ẹ̀ka ẹ́límẹ́ntì | Reactive nonmetal |
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Ìtò ẹ̀lẹ́ktrọ́nù | [Kr] 4d10 5s2 5p5 |
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Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 18, 7 |
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Àwọn ohun ìní ara |
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Ìfarahàn at STP | solid |
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Ìgbà ìyọ́ | 386.85 K (113.7 °C, 236.66 °F) |
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Ígbà ìhó | 457.4 K (184.3 °C, 363.7 °F) |
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Kíki (near r.t.) | 4.933 g/cm3 |
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Triple point | 386.65 K, 12.1 kPa |
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Critical point | 819 K, 11.7 MPa |
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Heat of fusion | (I2) 15.52 kJ/mol |
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Heat of | (I2) 41.57 kJ/mol |
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Molar heat capacity | (I2) 54.44 J/(mol·K) |
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pressure (rhombic)
P (Pa)
|
1
|
10
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100
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1 k
|
10 k
|
100 k
|
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at T (K)
|
260
|
282
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309
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342
|
381
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457
|
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Atomic properties |
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Oxidation states | −1, +1, +3, +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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Electronegativity | Pauling scale: 2.66 |
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Atomic radius | empirical: 140 pm |
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Covalent radius | 139±3 pm |
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Van der Waals radius | 198 pm |
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Spectral lines of iodine |
Other properties |
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Natural occurrence | primordial |
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Crystal structure | orthorhombic |
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Thermal conductivity | 0.449 W/(m·K) |
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Electrical resistivity | 1.3×107 Ω·m (at 0 °C) |
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Magnetic ordering | diamagnetic[2] |
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Bulk modulus | 7.7 GPa |
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CAS Number | 7553-56-2 |
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Main isotopes of iodine |
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Àdàkọ:Category-inline | references |