Tellurium
Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
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| Ìfarahàn |
silvery lustrous gray
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| Àwọn ìní àníkárí |
| Orúkọ, àmì-ìdámọ̀, nọ́mbà |
tellurium, Te, 52 |
| Ẹ̀ka apilẹ̀sẹ̀ |
metalloid |
| Àdìpọ̀, ìgbà, block |
16, 5, p |
| Ìwúwo átọ́mù |
127.60 g·mol−1 |
| Ìtòjọ ẹ̀lẹ́ktrónì |
[Kr] 4d10 5s2 5p4 |
| Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan |
2, 8, 18, 18, 6 (Image) |
| Àwọn ìní aláfójúrí |
| Phase |
solid |
| Kíki (tó súnmọ́ r.t.) |
6.24 g·cm−3 |
| Liquid density at m.p. |
5.70 g·cm−3 |
| ojúàmì ìyọ́ |
722.66 K, 449.51 °C, 841.12 °F |
| ajúàmì ìhó |
1261 K, 988 °C, 1810 °F |
| Heat of fusion |
17.49 kJ·mol−1 |
| Heat of vaporization |
114.1 kJ·mol−1 |
| Specific heat capacity |
(25 °C) 25.73 J·mol−1·K−1 |
| Vapor pressure |
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
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(775) |
(888) |
1042 |
1266 |
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| Atomic properties |
| Oxidation states |
6, 5, 4, 2, -2
(mildly acidic oxide) |
| Electronegativity |
2.1 (Pauling scale) |
| Ionization energies |
1st: 869.3 kJ·mol−1 |
| 2nd: 1790 kJ·mol−1 |
| 3rd: 2698 kJ·mol−1 |
| Atomic radius |
140 pm |
| Covalent radius |
138±4 pm |
| Van der Waals radius |
206 pm |
| Miscellanea |
| Crystal structure |
hexagonal |
| Magnetic ordering |
diamagnetic[1] |
| Thermal conductivity |
(300 K) (1.97–3.38) W·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 2610 m/s |
| Young's modulus |
43 GPa |
| Shear modulus |
16 GPa |
| Bulk modulus |
65 GPa |
| Mohs hardness |
2.25 |
| Brinell hardness |
180 MPa |
| CAS registry number |
13494-80-9 |
| Most stable isotopes |
| Main article: Isotopes of tellurium |
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