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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
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100
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1 k
|
10 k
|
100 k
|
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at T (K)
|
|
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(775)
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(888)
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1042
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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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Spectral 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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Àdàkọ:Category-inline | references |