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| Tellurium |
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| Pípè | /tᵻˈljʊəriəm/ (tə-LEWR-ee-əm) |
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| Ìhànsójú | silvery lustrous gray |
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| Ìwúwo átọ̀mù Ar, std(Te) | 127.60(3)[1] |
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| Tellurium ní orí tábìlì àyè |
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| Nọ́mbà átọ̀mù (Z) | 52 |
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| Ẹgbẹ́ | group 16 (chalcogens) |
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| Àyè | àyè 5 |
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| Àdìpọ̀ | Àdìpọ̀-p |
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| Ẹ̀ka ẹ́límẹ́ntì | Metalloid |
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| Ìtò ẹ̀lẹ́ktrọ́nù | [Kr] 4d10 5s2 5p4 |
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| Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan | 2, 8, 18, 18, 6 |
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| Àwọn ohun ìní ara |
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| Ìfarahàn at STP | solid |
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| Ìgbà ìyọ́ | 722.66 K (449.51 °C, 841.12 °F) |
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| Ígbà ìhó | 1261 K (988 °C, 1810 °F) |
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| Kíki (near r.t.) | 6.24 g/cm3 |
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| when liquid (at m.p.) | 5.70 g/cm3 |
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| Heat of fusion | 17.49 kJ/mol |
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| Heat of | 114.1 kJ/mol |
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| Molar heat capacity | 25.73 J/(mol·K) |
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pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | | | (775) | (888) | 1042 | 1266 |
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| Atomic properties |
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| Oxidation states | −2, −1, +1, +2, +3, +4, +5, +6 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment |
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| Electronegativity | Pauling scale: 2.1 |
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| Atomic radius | empirical: 140 pm |
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| Covalent radius | 138±4 pm |
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| Van der Waals radius | 206 pm |
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 Color lines in a spectral rangeSpectral lines of tellurium |
| Other properties |
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| Natural occurrence | primordial |
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| Crystal structure | hexagonal |
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| Speed of sound thin rod | 2610 m/s (at 20 °C) |
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| Thermal conductivity | (1.97–3.38) W/(m·K) |
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| Magnetic ordering | diamagnetic[2] |
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| Young's modulus | 43 GPa |
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| Shear modulus | 16 GPa |
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| Bulk modulus | 65 GPa |
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| Mohs hardness | 2.25 |
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| Brinell hardness | 180 MPa |
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| CAS Number | 13494-80-9 |
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| Main isotopes of tellurium |
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| Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
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| 120Te | 0.09% | >2.2×1016y | ε ε | 1.701 | 120Sn | | 121Te | syn | 16.78 d | ε | 1.040 | 121Sb | | 122Te | 2.55% | 122Te is stable with 70 neutrons | | 123Te | 0.89% | >1.0×1013 y | ε | 0.051 | 123Sb | | 124Te | 4.74% | 124Te is stable with 72 neutrons | | 125Te | 7.07% | 125Te is stable with 73 neutrons | | 126Te | 18.84% | 126Te is stable with 74 neutrons | | 127Te | syn | 9.35 h | β− | 0.698 | 127I | | 128Te | 31.74% | 2.2×1024 y | β−β− | 0.867 | 128Xe | | 129Te | syn | 69.6 min | β− | 1.498 | 129I | | 130Te | 34.08% | 7.9×1020 y | β−β− | 2.528 | 130Xe |
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| references |
